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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Transbus Program</span></span>
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</style><table class="infobox hproduct"><tbody><tr><th colspan="2" class="infobox-above fn" style="font-size:125%; background-color:#C0C0C0;color:inherit; padding:0.25em 1em; text-align:center;">Transbus</th></tr><tr><th colspan="2" class="infobox-header" style="background-color: #C0C0C0">Overview</th></tr><tr><th scope="row" class="infobox-label">Manufacturer</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">
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</style><div class="plainlist"><ul><li><a href="AM_General" title="AM General">AM General</a></li><li><a href="Flxible" title="Flxible">Flxible</a>/<a href="Rohr%2C_Inc." title="Rohr, Inc.">Rohr</a></li><li><a href="General_Motors" title="General Motors">General Motors</a></li></ul></div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #C0C0C0">Body and chassis</th></tr><tr><th scope="row" class="infobox-label"><a href="Car_classification" title="Car classification">Class</a></th><td class="infobox-data"><a href="Transit_bus" title="Transit bus">Transit bus</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #C0C0C0">Dimensions</th></tr><tr><th scope="row" class="infobox-label">Length</th><td class="infobox-data">41&nbsp;ft (12&nbsp;m) (over bumpers)<sup id="cite_ref-UMTA-oversight-hearing_1-0" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 125">: 125 </span></sup></td></tr><tr><th scope="row" class="infobox-label">Width</th><td class="infobox-data">102&nbsp;in (2,600&nbsp;mm)<sup id="cite_ref-UMTA-oversight-hearing_1-1" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 125">: 125 </span></sup></td></tr><tr><th scope="row" class="infobox-label">Height</th><td class="infobox-data">114&nbsp;in (2,900&nbsp;mm) (with A/C)<sup id="cite_ref-UMTA-oversight-hearing_1-2" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 125">: 125 </span></sup></td></tr><tr><th scope="row" class="infobox-label"><a href="Curb_weight" class="mw-redirect" title="Curb weight">Curb&nbsp;weight</a></th><td class="infobox-data">27,500 to 28,500&nbsp;lb (12,500 to 12,900&nbsp;kg) (est.)<sup id="cite_ref-UMTA-oversight-hearing_1-3" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 126">: 126 </span></sup></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #C0C0C0">Chronology</th></tr><tr><th scope="row" class="infobox-label">Predecessor</th><td class="infobox-data"><div class="plainlist"><ul><li><a href="Flxible_New_Look_bus" title="Flxible New Look bus">Flxible New Look bus</a></li><li><a href="GM_New_Look_bus" title="GM New Look bus">GM New Look bus</a></li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Successor</th><td class="infobox-data"><div class="plainlist"><ul><li><a href="Rapid_Transit_Series" title="Rapid Transit Series">Rapid Transit Series</a></li><li><a href="Flxible_Metro" title="Flxible Metro">Flxible Metro</a></li></ul></div></td></tr></tbody></table>
<p><b>Transbus</b> was announced in December 1970 as a United States <a href="Urban_Mass_Transportation_Administration" class="mw-redirect" title="Urban Mass Transportation Administration">Urban Mass Transportation Administration</a> (UMTA) program to develop improvements to existing <a href="Transit_bus" title="Transit bus">transit bus</a> design; at the time, the US bus market was dominated by the <a href="GM_New_Look" class="mw-redirect" title="GM New Look">GM New Look</a> and <a href="Flxible_New_Look" class="mw-redirect" title="Flxible New Look">Flxible New Look</a> buses, and bus ridership was declining. The improvements had been suggested earlier by the <a href="National_Academy_of_Sciences" title="National Academy of Sciences">National Academy of Sciences</a> in 1968 to improve operating costs, reduce pollution, and stimulate ridership, and included innovations such as a <a href="Low-floor_bus" title="Low-floor bus">low floor</a> for easier entry and seats cantilevered from the wall to expand passenger space.
</p><p>In 1971, <a href="Booz_Allen_Hamilton" title="Booz Allen Hamilton">Booz-Allen Applied Research</a> won the contract to serve as the Systems Manager for the Transbus program. Three manufacturers<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> were selected to participate in the Transbus program in 1972 and each produced prototypes for evaluation by late 1974; some were tested at a <a href="Proving_ground#Automotive" title="Proving ground">proving ground</a>,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup> others were subjected to crash testing, and the rest were placed into revenue service during a nationwide tour of four cities<sup id="cite_ref-4cities_5-0" class="reference"><a href="#cite_note-4cities-5"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup> in 1974 and 1975 to gather rider feedback, which was subsequently incorporated into a specification developed between 1976 and 1978. However, none of the three prototype manufacturers submitted a bid in response to a joint procurement of 530 buses<sup id="cite_ref-79bid_6-0" class="reference"><a href="#cite_note-79bid-6"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup> to the Transbus specification in 1979. Although no Transbuses were ever ordered, some of the program's goals were incorporated into the successor Advanced Design Buses introduced in the mid-1970s.
</p>
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<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>
<p>The Transbus program had five major goals;<sup id="cite_ref-UMTA-oversight-hearing_1-5" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 113">: 113 </span></sup> ancillary goals to achieve the first five were added in 1977:<sup id="cite_ref-Hearing77_7-0" class="reference"><a href="#cite_note-Hearing77-7"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 12">: 12 </span></sup>
</p>
<ol><li>Increase bus ridership</li>
<li>Improve safety</li>
<li>Improve environmental adaptability</li>
<li>Improve maintenance and service</li>
<li>Reduce barriers to the elderly, handicapped, and young</li>
<li>Improve aesthetics (exterior &amp; interior)</li>
<li>Improve performance</li></ol>
<div class="mw-heading mw-heading3"><h3 id="Early_development">Early development</h3></div>
<p>The interest in newer transit buses was sparked in part by laws passed in the late 1960s and early 1970s granting federal subsidies for public transportation equipment, including buses.<sup id="cite_ref-TBMP_8-0" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–8">: 3–8 </span></sup> <a href="General_Motors" title="General Motors">General Motors</a> (GM) began developing a replacement for its ubiquitous <a href="GM_New_Look_bus" title="GM New Look bus">New Look</a> bus in 1964, demonstrating a three-axle, turbine-powered<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>e<span class="cite-bracket">]</span></a></sup> prototype named Rapid Transit eXperimental (RTX) in 1968.<sup id="cite_ref-TBMP_8-1" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4–7">: 4–7 </span></sup>&nbsp;<sup id="cite_ref-BSC-16_9-1" class="reference"><a href="#cite_note-BSC-16-9"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> That same year, the National Academy of Sciences (NAS) published a report providing recommendations for buses that would reduce costs and improve ridership.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Although RTX would have met many of the objectives from the 1968 NAS report, testing and evaluation showed several issues: the lowered floor of the RTX, at 22&nbsp;in (560&nbsp;mm), meant novel chassis, suspension, and brake components were needed, adding to the complexity, weight, and cost of the RTX design.<sup id="cite_ref-Hearing77_7-1" class="reference"><a href="#cite_note-Hearing77-7"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 11">: 11 </span></sup>
</p><p>GM wrote a letter to <a href="United_States_Department_of_Transportation" title="United States Department of Transportation">United States Department of Transportation</a> Secretary <a href="John_Volpe" class="mw-redirect" title="John Volpe">John Volpe</a> in 1971, complaining that it had begun work on the RTX-derived <a href="Rapid_Transit_Series" title="Rapid Transit Series">Rapid Transit Series</a> (RTS) to meet the goals of the 1968 NAS report,<sup id="cite_ref-UMTA-oversight-hearing_1-6" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> but could not start serial production until UMTA changed its low-bid policy to allow federal subsidies for the RTS.<sup id="cite_ref-TBMP_8-2" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4–7">: 4–7 </span></sup> At the time, the three major U.S. transit bus manufacturers offered 'New Look' style buses that were functionally equivalent,<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>f<span class="cite-bracket">]</span></a></sup> and to qualify for federal subsidies, the transit agency was required to award its bus procurement contracts to the lowest bidder.<sup id="cite_ref-UMTA-oversight-hearing_1-7" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 152">: 152 </span></sup> GM later reversed its stance and announced in May 1973 it would begin producing the RTS.<sup id="cite_ref-UMTA-oversight-hearing_1-8" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> The first RTS prototype was produced in 1974, followed by the 1975 RTS-II prototype,<sup id="cite_ref-Hearing77_7-2" class="reference"><a href="#cite_note-Hearing77-7"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 11">: 11 </span></sup> which was evaluated in demonstration service by several transit agencies.
</p><p>The Transbus program was intended to design a standardized transit bus, which had the goals of reducing purchase, operating, and maintenance costs,<sup id="cite_ref-Reason-80_13-0" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> similar to how the Presidents' Conference Committee had designed the <a href="PCC_streetcar" title="PCC streetcar">PCC streetcar</a> in the 1930s. Transbus was meant to design a successor to the <i>de facto</i> New Look standard, running in parallel with the contemporaneous 1970s effort that designed the <a href="US_Standard_Light_Rail_Vehicle" title="US Standard Light Rail Vehicle">US Standard Light Rail Vehicle</a> as the PCC's successor. Transbus development would begin with the production and evaluation of candidate prototype designs from separate manufacturers.<sup id="cite_ref-Reason-80_13-1" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Prototype_testing">Prototype testing</h3></div>
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</style><div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:204px;max-width:204px"><div class="trow"><div class="theader">Transbus candidate prototypes</div></div><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"></span></div><div class="thumbcaption text-align-center"><a href="AM_General" title="AM General">AM General</a></div></div></div><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"></span></div><div class="thumbcaption text-align-center"><a href="Flxible" title="Flxible">Flxible</a>/<a href="Rohr%2C_Inc." title="Rohr, Inc.">Rohr</a></div></div></div><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"></span></div><div class="thumbcaption text-align-center"><a href="General_Motors" title="General Motors">General Motors</a></div></div></div><div class="trow" style="display:flex"><div class="thumbcaption">Photographed during testing in Arizona.</div></div></div></div>
<p>The initial prototyping contracts were awarded to <a href="AM_General" title="AM General">AM General</a>, <a href="General_Motors" title="General Motors">General Motors</a>, and <a href="Rohr%2C_Inc." title="Rohr, Inc.">Rohr</a>'s <a href="Flxible" title="Flxible">Flxible</a> division in 1972 to build nine Transbus candidate prototypes (three from each manufacturer) for further testing and evaluation<sup id="cite_ref-Whitford-83_14-0" class="reference"><a href="#cite_note-Whitford-83-14"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> at a total cost of <span style="white-space: nowrap">US$28,000,000</span> (equivalent to $210,480,000 in 2024).<sup id="cite_ref-UMTA-oversight-hearing_1-9" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> Booz-Allen would test and evaluate each design, then composite the best ideas from each into a standardized procurement specification.<sup id="cite_ref-Reason-80_13-2" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> This was to be followed by the procurement of 100 to 600 preproduction Transbuses for further development and testing in revenue service.<sup id="cite_ref-Reason-80_13-3" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Whitford-83_14-1" class="reference"><a href="#cite_note-Whitford-83-14"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> In March 1973, representatives from UMTA testified before Congress they intended for each manufacturer to produce 100 preproduction prototypes.<sup id="cite_ref-UMTA-oversight-hearing_1-10" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> The <a href="American_Public_Transit_Association" class="mw-redirect" title="American Public Transit Association">American Public Transit Association</a> proposed for each manufacturer to produce 200 preproduction prototypes for evaluation in service, then hold a two-year production moratorium to gather feedback.<sup id="cite_ref-UMTA-oversight-hearing_1-11" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 113">: 113 </span></sup>
</p><p>Due to the <a href="Rehabilitation_Act_of_1973" title="Rehabilitation Act of 1973">Rehabilitation Act of 1973</a>, which was passed in September 1973,<sup id="cite_ref-UMTA-oversight-hearing_1-12" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> the goals of Transbus shifted to allow full accessibility for public transit vehicles, and the candidate designs were modified to incorporate a ramp or a lift. The nine prototypes were delivered in 1974.<sup id="cite_ref-Reason-80_13-4" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Three would be crash tested,<sup id="cite_ref-Reason-80_13-5" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> three would be tested in Phoenix and Buffalo, and the remaining three would enter demonstration service for evaluation in four cities.<sup id="cite_ref-4cities_5-1" class="reference"><a href="#cite_note-4cities-5"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup> On May 13, 1975, one of the Flxible prototypes caught fire during testing in Arizona and was destroyed,<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> but no one was injured; at the time, it was carrying two technicians, instruments, and sandbags to simulate a full passenger load.<sup id="cite_ref-Reason-80_13-6" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p><p>In 1975, the UMTA canceled its initial plans to procure the larger fleet of preproduction Transbuses for further testing. This had been intended to mature the technologies required to support the Transbus priority goals, and the cancellation of the preproduction fleet left these technologies underdeveloped.<sup id="cite_ref-Whitford-83_14-2" class="reference"><a href="#cite_note-Whitford-83-14"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> By 1980, of the six prototypes that had been tested, one had been destroyed in a fire, another had been returned to Flxible, and the other four were being stored in Phoenix, Arizona.<sup id="cite_ref-Reason-80_13-7" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Shifting_requirements">Shifting requirements</h3></div>
<p>In January 1975, UMTA Administrator Frank C. Herringer announced the prototypes would be used to create a composite performance specification for Transbus<sup id="cite_ref-UMTA-oversight-hearing_1-13" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> and that new bus procurements would need to meet the Transbus specification to qualify for federal subsidies; his intent was to quash GM's competing RTS bus design. GM was undeterred and continued development of the RTS, and Herringer soon left UMTA to head the <a href="Bay_Area_Rapid_Transit_District" title="Bay Area Rapid Transit District">Bay Area Rapid Transit District</a>.<sup id="cite_ref-Reason-80_13-8" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> One of his successors, Robert E. Patricelli, quietly encouraged GM to continue developing the RTS; by that time, GM already had concluded the Transbus project requirements were impossible to implement.<sup id="cite_ref-Reason-80_13-9" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> GM made its first sale for the RTS to a consortium of transit agencies in May 1976; GM was the sole bidder for that contract.<sup id="cite_ref-UMTA-oversight-hearing_1-14" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup>
</p><p>Patricelli would go on to effectively kill Transbus by issuing a policy order in July 1976 stating the specified Transbus floor height of 22&nbsp;in (560&nbsp;mm) was impractical, adding that Advanced Design Bus (ADB) designs<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>g<span class="cite-bracket">]</span></a></sup> then under development would qualify for federal subsidies.<sup id="cite_ref-UMTA-oversight-hearing_1-15" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–4">: 3–4 </span></sup> In February 1977, Patricelli made the ADB specification a requirement for buses procured using federal subsidies,<sup id="cite_ref-Reason-80_13-10" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> shutting out AM General, who had not developed an ADB in parallel with their Transbus prototype, as GM and Flxible had.<sup id="cite_ref-AMGvDOT_17-0" class="reference"><a href="#cite_note-AMGvDOT-17"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>
</p><p>Changing requirements for Transbus also led to considerable confusion. The Transbus Procurement Requirement (TPR) specifications were first promulgated in 1976, but amended numerous times, occasionally in conflict with prior versions. For instance, in March 1978, TPR were amended to require a single rear axle, but were subsequently amended that August to require tandem rear axles.<sup id="cite_ref-UMTA-oversight-hearing_1-16" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 5">: 5 </span></sup>
</p><p>AM General filed a lawsuit against the <a href="United_States_Department_of_Transportation" title="United States Department of Transportation">United States Department of Transportation</a> in 1976 over the "exclusionary" specifications in the GM RTS contract awarded by the consortium,<sup id="cite_ref-UMTA-oversight-hearing_1-17" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 4">: 4 </span></sup> asserting the new ADB specification requirement to qualify for federal subsidies essentially shut them out of the transit bus market altogether;<sup id="cite_ref-AMGvDOT_17-1" class="reference"><a href="#cite_note-AMGvDOT-17"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> the lawsuit effectively halted all transit bus procurement nationwide.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> AM General lost their suit in April 1977.<sup id="cite_ref-UMTA-oversight-hearing_1-18" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 5">: 5 </span></sup>
</p>

<p>Incoming Secretary of Transportation <a href="Brock_Adams" title="Brock Adams">Brock Adams</a> revived the Transbus project, and in May 1977, stated that by October 1979, new buses would have to meet the Transbus specifications to qualify for federal subsidies.<sup id="cite_ref-UMTA-oversight-hearing_1-19" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 114">: 114 </span></sup>&nbsp;<sup id="cite_ref-TBMP_8-3" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–10">: 3–10 </span></sup>&nbsp;<sup id="cite_ref-Reason-80_13-11" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> In 1978, the <a href="San_Francisco_Municipal_Railway" title="San Francisco Municipal Railway">San Francisco Municipal Railway</a> ruled out Transbus for its forthcoming procurement of accessible buses, noting the lowered floor and undercarriage would get caught on the city's hills.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Bid_failure">Bid failure</h3></div>
<p>The Transbus specification requirement led three transit agencies<sup id="cite_ref-79bid_6-1" class="reference"><a href="#cite_note-79bid-6"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup> to request bids for a joint procurement of 530 buses in January 1979.<sup id="cite_ref-Reason-80_13-12" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> It was estimated that a single Transbus would cost 60% more than a comparable New Look bus, driven mainly by the low-floor requirement, which in turn would require significant investments to develop axle, drivetrain, suspension, and tire technologies. In addition, the terms of the 1979 procurement made the bidders responsible for significant risks and performance guarantees.<sup id="cite_ref-Whitford-83_14-3" class="reference"><a href="#cite_note-Whitford-83-14"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p><p>By March 1979, <a href="Grumman" title="Grumman">Grumman</a> Flxible<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>h<span class="cite-bracket">]</span></a></sup> announced it did not intend to bid on the new contract, and GM stated it was unlikely to bid. The president of Grumman Flxible, Thomas J. Bernard, said that internal estimates put the bid price at <span style="white-space: nowrap">US$230,000</span> (equivalent to $996,000 in 2024) per bus, nearly double the <span style="white-space: nowrap">US$120,000</span> (equivalent to $520,000 in 2024) cost per conventional New Look bus, and added the Department of Transportation "has been seeking a more productive bus. We believe that a bus that weighs more, gets fewer miles per gallon, has fewer seats and less standing room is not a more productive bus."<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> Flxible also stated that component suppliers (such as <a href="Rockwell_International" title="Rockwell International">Rockwell International</a>, who built transit bus axles) would need federal support to develop the new technologies needed for Transbus, as the limited transit bus market meant most component suppliers were unwilling to develop them.<sup id="cite_ref-UMTA-oversight-hearing_1-20" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 114">: 114 </span></sup>
</p><p>When the bidding period closed that May, neither GM, Flxible, nor any foreign manufacturers had provided a bid.<sup id="cite_ref-Reason-80_13-13" class="reference"><a href="#cite_note-Reason-80-13"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Secretary Adams said he was "deeply disappointed" that no bids had been received; the companies countered the Transbus design was impossible to implement and their ADB designs already met accessibility requirements.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> A Congressional hearing was held later in May regarding the failure of the procurement.<sup id="cite_ref-UMTA-oversight-hearing_1-21" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> With the failure of the 1979 procurement, the requirement to procure new, federally subsidized buses to the Transbus specification was suspended in August.<sup id="cite_ref-TBMP_8-4" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–11">: 3–11 </span></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Legacy">Legacy</h2></div>
<div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:204px;max-width:204px"><div class="trow"><div class="theader">Advanced Design Bus</div></div><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"></span></div><div class="thumbcaption text-align-center"><a href="Flxible_Metro" title="Flxible Metro">Flxible Metro/870</a> (1976)</div></div></div><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"></span></div><div class="thumbcaption text-align-center"><a href="Rapid_Transit_Series" title="Rapid Transit Series">GM RTS-II</a> (1975)</div></div></div><div class="trow" style="display:flex"><div class="thumbcaption">During testing with <a href="AC_Transit" title="AC Transit">AC Transit</a></div></div></div></div>
<p>Transbus is credited with inspiring the simplified ADB specification, changing bus procurement processes, and bringing awareness to the changes that were later made for wheelchair accessibility on transit buses, including the addition of lifts and kneeling bus features.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup>
</p><p>Each of the three Transbus manufacturers began marketing transit buses in the 1970s, although each of these newer bus designs had a conventional (high) floor and multiple steps in the entryway. AM General began assembling the Metropolitan, a licensed version of the New Look-based <a href="Flyer_700/800/900_series" title="Flyer 700/800/900 series">Flyer D700</a>, in 1974.<sup id="cite_ref-TBMP_8-5" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–8">: 3–8 </span></sup> The other two bus designs were ADBs, developed independently by GM and Flxible and incorporated some of the Transbus features such as cantilevered seats, smooth exterior construction, and standard air conditioning: GM announced the RTS in 1973 and Rohr/Flxible announced the <a href="Flxible_Metro" title="Flxible Metro">Metro/870</a> in 1976.<sup id="cite_ref-TBMP_8-6" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–10, 3–11">: 3–10, 3–11 </span></sup>
</p><p>Prior to the Transbus project, procurement contracts traditionally were awarded to the lowest bidder. After GM and Flxible introduced their ADB designs, UMTA developed a "White Book" model transit bus procurement specification that provided functional targets with price adjustments for features inherent to the ADBs.<sup id="cite_ref-TBMP_8-7" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–12">: 3–12 </span></sup>
</p><p>All three of the Transbus candidate prototype manufacturers eventually left the transit bus market. After losing their suit, AM General left the transit bus market altogether in June 1978.<sup id="cite_ref-TBMP_8-8" class="reference"><a href="#cite_note-TBMP-8"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 3–11">: 3–11 </span></sup>&nbsp;<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> AM General's exit was preceded by Rohr (who sold Flxible to Grumman in January 1978)<sup id="cite_ref-GrummanVRohr_20-1" class="reference"><a href="#cite_note-GrummanVRohr-20"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> and followed by GM (who sold the RTS design and tooling to <a href="Greyhound_Lines" title="Greyhound Lines">Greyhound Lines</a> in January 1987).<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2></div>
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<div class="mw-references-wrap"><ol class="references">
<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><a href="AM_General" title="AM General">AM General</a>, <a href="General_Motors" title="General Motors">General Motors</a>, and <a href="Rohr%2C_Inc." title="Rohr, Inc.">Rohr</a>/<a href="Flxible" title="Flxible">Flxible</a></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">The Dynamic Systems, Inc. proving grounds near <a href="Phoenix%2C_Arizona" title="Phoenix, Arizona">Phoenix, Arizona</a></span>
</li>
<li id="cite_note-4cities-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-4cities_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-4cities_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">From October 1974 to March 1975, three Transbus prototypes (one from each manufacturer) were tested in <a href="Miami" title="Miami">Miami</a>, <a href="New_York_City" title="New York City">New York</a>, <a href="Kansas_City" class="mw-redirect" title="Kansas City">Kansas City</a>, and <a href="Seattle" title="Seattle">Seattle</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></span>
</li>
<li id="cite_note-79bid-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-79bid_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-79bid_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">The request for bid was issued jointly by <a href="Southern_California_Rapid_Transit_District" title="Southern California Rapid Transit District">SCRTD</a>, <a href="Metrobus_(Miami-Dade_County)" title="Metrobus (Miami-Dade County)">Metrobus</a>, and <a href="SEPTA" title="SEPTA">SEPTA</a>, the transit agencies serving <a href="Los_Angeles" title="Los Angeles">Los Angeles</a>, Miami, and <a href="Philadelphia" title="Philadelphia">Philadelphia</a>, respectively. The three-agency consortium had been formed in October 1977 at an <a href="American_Public_Transit_Association" class="mw-redirect" title="American Public Transit Association">American Public Transit Association</a> meeting, and were privately told there by UMTA representatives that an order of at least 500 Transbuses would "put us over the hill in moving the Transbus program forward." The final bid request was for 230 (Los Angeles), 110 (Miami), and 190 (Philadelphia) Transbuses.<sup id="cite_ref-UMTA-oversight-hearing_1-4" class="reference"><a href="#cite_note-UMTA-oversight-hearing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 5, 7">: 5, 7 </span></sup></span>
</li>
<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text">The RTX used the same <a href="GM_Whirlfire_engine" title="GM Whirlfire engine">GT-309 gas turbine engine</a> previously developed and installed in the 1966 prototype <a href="Chevrolet_Turbo_Titan_III" title="Chevrolet Turbo Titan III">Chevrolet Turbo Titan III</a> truck.<sup id="cite_ref-BSC-16_9-0" class="reference"><a href="#cite_note-BSC-16-9"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></span>
</li>
<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text">These were the <a href="GM_New_Look" class="mw-redirect" title="GM New Look">GM New Look</a>, <a href="Flxible_New_Look" class="mw-redirect" title="Flxible New Look">Flxible New Look</a>, and <a href="Flyer_700/800/900_series" title="Flyer 700/800/900 series">AM General Metropolitan</a>.</span>
</li>
<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text">'Advanced Design Bus' collectively refers to the General Motors <a href="Rapid_Transit_Series" title="Rapid Transit Series">Rapid Transit Series</a> and the Rohr/Flxible <a href="Flxible_Metro" title="Flxible Metro">870/Metro</a> designs.</span>
</li>
<li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><a href="Grumman" title="Grumman">Grumman</a> acquired <a href="Flxible" title="Flxible">Flxible</a> from <a href="Rohr%2C_Inc." title="Rohr, Inc.">Rohr</a> on January 3, 1978 for <span style="white-space: nowrap">US$55,000,000</span> (equivalent to $265,150,000 in 2024). The acquisition included two hand-built prototypes of and the design for the <a href="Flxible_Metro" title="Flxible Metro">Model 870</a>.<sup id="cite_ref-GrummanVRohr_20-0" class="reference"><a href="#cite_note-GrummanVRohr-20"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
<div class="reflist">
<div class="mw-references-wrap mw-references-columns"><ol class="references">
<li id="cite_note-UMTA-oversight-hearing-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-UMTA-oversight-hearing_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-6"><sup><i><b>g</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-7"><sup><i><b>h</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-8"><sup><i><b>i</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-9"><sup><i><b>j</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-10"><sup><i><b>k</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-11"><sup><i><b>l</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-12"><sup><i><b>m</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-13"><sup><i><b>n</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-14"><sup><i><b>o</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-15"><sup><i><b>p</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-16"><sup><i><b>q</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-17"><sup><i><b>r</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-18"><sup><i><b>s</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-19"><sup><i><b>t</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-20"><sup><i><b>u</b></i></sup></a> <a href="#cite_ref-UMTA-oversight-hearing_1-21"><sup><i><b>v</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation report cs1"><a rel="nofollow" class="external text" href="https://catalog.hathitrust.org/Record/002949644">Oversight of the Urban Mass Transportation Administration's Technology Development and Equipment Procurement Programs</a> (Report). U.S. House of Representatives, Subcommittee on Oversight and Review, Committee on Public Works and Transportation. May 16–22, 1979<span class="reference-accessdate">. Retrieved <span class="nowrap">10 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite id="CITEREFSimpson_and_Curtin1976" class="citation report cs1">Simpson and Curtin (January 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/41464">Transbus public testing and evaluation program</a> (Report). Urban Mass Transportation Administration.</cite></span>
</li>
<li id="cite_note-Hearing77-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-Hearing77_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Hearing77_7-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Hearing77_7-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><cite class="citation report cs1"><a rel="nofollow" class="external text" href="https://rosap.ntl.bts.gov/view/dot/15022">Public hearing on Transbus</a> (Report). United States Department of Transportation. March 15, 1977<span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-TBMP-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-TBMP_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-TBMP_8-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-TBMP_8-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-TBMP_8-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-TBMP_8-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-TBMP_8-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-TBMP_8-6"><sup><i><b>g</b></i></sup></a> <a href="#cite_ref-TBMP_8-7"><sup><i><b>h</b></i></sup></a> <a href="#cite_ref-TBMP_8-8"><sup><i><b>i</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFWeiers,_B.Rossetti,_M.1982" class="citation report cs1">Weiers, B.; Rossetti, M. (March 1982). <a rel="nofollow" class="external text" href="https://rosap.ntl.bts.gov/view/dot/11394">Transit Bus Manufacturer Profiles</a> (Report). U.S. Department of Transportation, Urban Mass Transportation Administration<span class="reference-accessdate">. Retrieved <span class="nowrap">5 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-BSC-16-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-BSC-16_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-BSC-16_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFBrophy,_Jim2016" class="citation web cs1">Brophy, Jim (November 27, 2016). <a rel="nofollow" class="external text" href="https://www.curbsideclassic.com/bus-stop-classic/bus-stop-classics-general-motors-rapid-transit-series-rts-ii-coach-a-sure-bet/">"Bus Stop Classic: General Motors Rapid transit Series (RTS) II Coach — GM Deadly Sin #27 — A Sure Bet?"</a>. <i>Curbside Classic</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><cite id="CITEREFHighway_Research_Board1968" class="citation report cs1">Highway Research Board (May 1968). Design and Performance Criteria for Improved Nonrail Urban Mass Transit Vehicles and Related Urban Transportation Systems (Report). U.S. Department of Housing and Urban Development.</cite></span>
</li>
<li id="cite_note-Reason-80-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-Reason-80_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Reason-80_13-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Reason-80_13-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Reason-80_13-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-Reason-80_13-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-Reason-80_13-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-Reason-80_13-6"><sup><i><b>g</b></i></sup></a> <a href="#cite_ref-Reason-80_13-7"><sup><i><b>h</b></i></sup></a> <a href="#cite_ref-Reason-80_13-8"><sup><i><b>i</b></i></sup></a> <a href="#cite_ref-Reason-80_13-9"><sup><i><b>j</b></i></sup></a> <a href="#cite_ref-Reason-80_13-10"><sup><i><b>k</b></i></sup></a> <a href="#cite_ref-Reason-80_13-11"><sup><i><b>l</b></i></sup></a> <a href="#cite_ref-Reason-80_13-12"><sup><i><b>m</b></i></sup></a> <a href="#cite_ref-Reason-80_13-13"><sup><i><b>n</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFParachini,_Allan1980" class="citation magazine cs1">Parachini, Allan (July 1980). <a rel="nofollow" class="external text" href="https://reason.com/1980/07/01/sic-transit-transbus/">"Sic Transit Transbus"</a>. <i>reason</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-Whitford-83-14"><span class="mw-cite-backlink">^ <a href="#cite_ref-Whitford-83_14-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Whitford-83_14-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Whitford-83_14-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Whitford-83_14-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFWhitford,_R.K.1983" class="citation journal cs1">Whitford, R.K. (1983). <a rel="nofollow" class="external text" href="https://trid.trb.org/view/196256">"Federal Government and Integrated Vehicle Development: U.S. Experience"</a>. <i>Transportation Research Record</i> (909). Transportation Research Board. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0361-1981">0361-1981</a><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><cite id="CITEREFBooz-Allen_Applied_Research1975" class="citation report cs1">Booz-Allen Applied Research (1975). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=xsJgHAAACAAJ">Fire Accident Report: Rohr Transbus Prototype Model R45-WTA102 Urban Coach on Interstate Route I-17, North of Phoenix, Arizona, May 13, 1975</a> (Report). Urban Mass Transportation Administration<span class="reference-accessdate">. Retrieved <span class="nowrap">11 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-AMGvDOT-17"><span class="mw-cite-backlink">^ <a href="#cite_ref-AMGvDOT_17-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-AMGvDOT_17-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite><i>AM General Corp. v. Dept. of Transp.</i></cite>, <a rel="nofollow" class="external text" href="https://law.justia.com/cases/federal/district-courts/FSupp/433/1166/1814278/">433 F.Supp. 1166</a> (<a href="US_District_Court_for_the_District_of_Columbia" class="mw-redirect" title="US District Court for the District of Columbia">D.D.C.</a> 1977).</span>
</li>
<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite id="CITEREFTulsky,_Frederic_S.1981" class="citation news cs1">Tulsky, Frederic S. (April 19, 1981). <a rel="nofollow" class="external text" href="https://www.newspapers.com/clip/28488981/the-philadelphia-inquirer/">"It's the best of all possible buses — on paper"</a>. <i>The Philadelphia Inquirer</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><cite id="CITEREFGlover,_Malcolm1978" class="citation news cs1">Glover, Malcolm (August 2, 1978). <a rel="nofollow" class="external text" href="https://www.newspapers.com/clip/37197407/the-san-francisco-examiner/">"Bids weighed for buses that handicapped can use"</a>. <i>San Francisco Examiner</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-GrummanVRohr-20"><span class="mw-cite-backlink">^ <a href="#cite_ref-GrummanVRohr_20-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-GrummanVRohr_20-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite><i>Grumman Allied Industries, Inc. v. Rohr Industries, Inc.</i></cite>, <a rel="nofollow" class="external text" href="https://casetext.com/case/grumman-allied-industries-v-rohr-industries">748 F.2d 729</a> (<a href="United_States_Court_of_Appeals%2C_Second_Circuit" class="mw-redirect" title="United States Court of Appeals, Second Circuit">2d Cir.</a> 1984).</span>
</li>
<li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/newspage/147073438/">"Lack Of Bids Threatens 'Wheelchair' Bus"</a>. <i>The Pittsburgh Press</i>. March 14, 1979<span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><cite id="CITEREFRaspberry,_William1979" class="citation news cs1">Raspberry, William (May 9, 1979). <a rel="nofollow" class="external text" href="https://www.newspapers.com/newspage/147100831/">"Transbus: Too Many Design Handicaps, Builders Say"</a>. <i>The Pittsburgh Press</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><cite class="citation report cs1"><a rel="nofollow" class="external text" href="https://rosap.ntl.bts.gov/view/dot/639">Transit Demonstration Projects That Made a Difference</a> (Report). U.S. Department of Transportation, Federal Transit Administration, Office of Research, Demonstration and Innovation. June 1996. pp.&nbsp;<span class="nowrap">5–</span>6.</cite></span>
</li>
<li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><cite class="citation news cs1"><span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://www.nytimes.com/1978/06/01/archives/amc-to-halt-building-standard-transit-buses-4300-vehicles-sold-over.html">"A.M.C. to Halt Building Standard Transit Buses"</a></span>. <i>The New York Times</i>. AP. June 1, 1978<span class="reference-accessdate">. Retrieved <span class="nowrap">10 October</span> 2020</span>.</cite></span>
</li>
<li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><cite id="CITEREFYoshihashi,_Pauline1987" class="citation news cs1">Yoshihashi, Pauline (January 13, 1987). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://www.nytimes.com/1987/01/13/business/company-news-greyhound-to-buy-gm-unit.html">"Company News; Greyhound To Buy G.M. Unit"</a></span>. <i>The New York Times</i><span class="reference-accessdate">. Retrieved <span class="nowrap">10 October</span> 2020</span>.</cite></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading3"><h3 id="Program_papers_and_reports">Program papers and reports</h3></div>
<ul><li><cite id="CITEREFWing,_J.Buckel,_H.Mateyka,_J.1973" class="citation conference cs1">Wing, J.; Buckel, H.; Mateyka, J. (1973). <i>Transbus — Current Developments in Urban Bus Design</i>. International Automotive Engineering Congress and Exposition. <i>SAE Technical Papers</i>. Society of Automotive Engineers. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.4271%2F730217">10.4271/730217</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0148-7191">0148-7191</a>.</cite></li>
<li><cite id="CITEREFAtkins,_J.F.1975" class="citation conference cs1">Atkins, J.F. (August 11–14, 1975). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/40995"><i>Transbus-testing and public evaluation (Around the country in 80 days)</i></a>. Society of Automotive Engineers Conference, West Coast Meeting. Seattle, Washington.</cite></li>
<li><cite id="CITEREFGeneral_Motors_Corporation,_Truck_and_Coach_Division1975" class="citation report cs1">General Motors Corporation, Truck and Coach Division (May 1975). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/51667">The General Motors Transbus</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFRohr_Industries,_Inc.1975" class="citation report cs1">Rohr Industries, Inc. (June 1975). <a rel="nofollow" class="external text" href="https://trid.trb.org/view/48806">Rohr Industries Transbus</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFSimpson_and_Curtin1976" class="citation report cs1">Simpson and Curtin (January 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/41464">Transbus public testing and evaluation program</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFBooz-Allen_Applied_Research1976" class="citation report cs1">Booz-Allen Applied Research (April 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/41531">Bus Interior Design for Improved Safety</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFBooz-Allen_Applied_Research1976" class="citation report cs1">Booz-Allen Applied Research (May 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/56514">Energy Absorbing Bumpers for Transit Buses: Transbus Program</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFBooz-Allen_Applied_Research1976" class="citation report cs1">Booz-Allen Applied Research (May 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/48813">Human Factors Evaluation of Transbus by the Elderly</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFBooz-Allen_Applied_Research,_Inc.1976" class="citation report cs1">Booz-Allen Applied Research, Inc. (July 1976). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/51053">Transbus operational, passenger, and cost impacts: Transbus program</a> (Report). Urban Mass Transportation Administration.</cite></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Inc.1977" class="citation report cs1">Booz, Allen &amp; Hamilton, Inc. (March 1977). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/56779">Gas Turbine Engine Application in Transit Coaches</a> (Report). Urban Mass Transportation Administration.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Inc.1977" class="citation report cs1">Booz, Allen &amp; Hamilton, Inc. (May 1977). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/51031">Boarding Ramps for Transit Buses</a> (Report). Urban Mass Transportation Administration.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Inc.1977" class="citation report cs1">Booz, Allen &amp; Hamilton, Inc. (September 1977). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/69523">Transit Bus Propulsion Systems: Alternate Power Plant Installations</a> (Report). Urban Mass Transportation Administration.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Inc.,_Transportation_Consulting_Division1977" class="citation report cs1">Booz, Allen &amp; Hamilton, Inc., Transportation Consulting Division (September 1977). <a rel="nofollow" class="external text" href="http://libraryarchives.metro.net/DPGTL/usdot/1977-transbus-safety-and-human-factors-summary-report-september.pdf">Transbus Safety and Human Factors</a> <span class="cs1-format">(PDF)</span> (Report). Urban Mass Transportation Administration.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Transportation_Consulting_Division1977" class="citation report cs1">Booz, Allen &amp; Hamilton, Transportation Consulting Division (December 1977). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/57976">Transbus Engineering Test Program: Final Report</a> (Report). Urban Mass Transportation Administration, Bus Projects Division.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFBooz,_Allen_&amp;_Hamilton,_Inc.1978" class="citation report cs1">Booz, Allen &amp; Hamilton, Inc. (January 1978). <a rel="nofollow" class="external text" href="https://trid.trb.org/View/77187">Transit Bus Propulsion Systems: Propulsion Requirements</a> (Report). Urban Mass Transportation Administration.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite report}}</code>: CS1 maint: multiple names: authors list (link)</span></li>
<li><cite id="CITEREFMason,_William_F.Milner,_James_L.Wood,_PeterZobrak,_Marcel_J.1979" class="citation report cs1">Mason, William F.; Milner, James L.; Wood, Peter; Zobrak, Marcel J. (July 1979). <a rel="nofollow" class="external text" href="http://libraryarchives.metro.net/DPGTL/usdot/1979-transbus-an-overview-of-technical-operational-and-economic-characteristics.pdf">Transbus: An Overview of Technical, Operational, and Economic Characteristics</a> <span class="cs1-format">(PDF)</span> (Report). U.S. Department of Transportation, Urban Mass Transportation Administration<span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></li></ul>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
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<div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Transbus_Program" class="extiw external" title="commons:Category:Transbus Program">Transbus Program</a></span>.</div></div>
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<ul><li><cite id="CITEREFWoodcock,_Eric2020" class="citation web cs1">Woodcock, Eric (7 June 2020). <a rel="nofollow" class="external text" href="https://zavanak.com/transbus/">"The US Transbus programme"</a>. <i>Zavanak</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 October</span> 2020</span>.</cite></li>
<li><cite id="CITEREFWhitten,_C1977" class="citation magazine cs1">Whitten, C (September 1977). "A Transit Operator Views Transbus". <i>Motor Coach Age</i>. Vol.&nbsp;29, no.&nbsp;9. pp.&nbsp;<span class="nowrap">9–</span>16.</cite></li>
<li><cite id="CITEREFMcElroy,_J1978" class="citation magazine cs1">McElroy, J (December 1978). "Bus Builders Hang in Suspended Innovation". <i>Automotive Industries</i>. Vol.&nbsp;158, no.&nbsp;18. pp.&nbsp;<span class="nowrap">42–</span>47.</cite></li>
<li><cite id="CITEREFPolzin,_SESchofer,_JL1979" class="citation journal cs1">Polzin, SE; Schofer, JL (September 1979). "Service Quality Implications of Transbus". <i>Transportation Engineering Journal of ASCE</i>. <b>105</b> (5): <span class="nowrap">561–</span>576. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1061%2FTPEJAN.0000813">10.1061/TPEJAN.0000813</a>.</cite></li>
<li><cite id="CITEREFAzad,_Bizhan1980" class="citation thesis cs1">Azad, Bizhan (May 1980). <a rel="nofollow" class="external text" href="https://dspace.mit.edu/bitstream/handle/1721.1/16149/07916354-MIT.pdf"><i>The Role of Federal Government in Fostering Technological Change in Public Transportation: A Case Study of Transbus</i></a> <span class="cs1-format">(PDF)</span> (M.S. thesis). Massachusetts Institute of Technology.</cite></li>
<li><cite id="CITEREFBuckel,_H._H.Steffen,_J._H.1981" class="citation journal cs1">Buckel, H. H.; Steffen, J. H. (1981). "A Transit Bus for the 90's". <i>SAE Transactions</i>. <b>90</b>. Society of Automotive Engineers International: <span class="nowrap">4011–</span>4020. <a href="JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a>&nbsp;<a rel="nofollow" class="external text" href="https://www.jstor.org/stable/44725013">44725013</a>.</cite></li></ul>
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</style><div id="General_Motors_buses,_1940s–1990s118" style="font-size:114%;margin:0 4em"><a href="General_Motors" title="General Motors">General Motors</a> buses, 1940s–1990s</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;border-width:0;"><div style="padding:0">
<table style="width:100%" class="wraplinks">

<tbody><tr style="background-color:#F0F0F0;">
<td rowspan="2" width="10%"><b>Type</b>
</td>
<td colspan="10" width="15%">1940s
</td>
<td colspan="10" width="15%">1950s
</td>
<td colspan="10" width="15%">1960s
</td>
<td colspan="10" width="15%">1970s
</td>
<td colspan="10" width="15%">1980s
</td>
<td colspan="10" width="15%">1990s
</td></tr>
<tr style="background-color:#F0F0F0;">
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td>
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td>
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td>
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td>
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td>
<td width="1.5%">0</td>
<td width="1.5%">1</td>
<td width="1.5%">2</td>
<td width="1.5%">3</td>
<td width="1.5%">4</td>
<td width="1.5%">5</td>
<td width="1.5%">6</td>
<td width="1.5%">7</td>
<td width="1.5%">8</td>
<td width="1.5%">9
</td></tr>
<tr style="background-color:#E0E0E0;">
<td rowspan="4" style="background-color:#F0F0F0"><a href="Transit_bus" title="Transit bus">Transit bus</a>
</td>
<td colspan="3" style="background-color:#C0C0C0"><a href="Yellow_Coach" class="mw-redirect" title="Yellow Coach">Yellow Coach</a> <a href="GM_%22old-look%22_transit_bus" title="GM &quot;old-look&quot; transit bus">"Old Look"</a>
</td>
<td colspan="27" style="background-color:#C0C0C0"><a href="GM_%22old-look%22_transit_bus" title="GM &quot;old-look&quot; transit bus">"Old Look"</a>
</td>
<td colspan="30">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td colspan="19">
</td>
<td colspan="27" style="background-color:#c0c0c0"><a href="GM_New_Look_bus" title="GM New Look bus">"New Look"</a>
</td>
<td colspan="14">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td colspan="42">
</td>
<td colspan="6" style="background-color:#c0c0c0"><a href="Classic_(transit_bus)" title="Classic (transit bus)">Classic</a>
</td>
<td colspan="5" style="background-color:#c0c0c0"><a href="Motor_Coach_Industries" title="Motor Coach Industries">MCI</a> <a href="Classic_(transit_bus)" title="Classic (transit bus)">Classic</a>
</td>
<td colspan="5" style="background-color:#c0c0c0"><a href="NovaBus" class="mw-redirect" title="NovaBus">NovaBus</a> <a href="Classic_(transit_bus)" title="Classic (transit bus)">Classic</a>
</td>
<td colspan="2">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td colspan="37">
</td>
<td colspan="11" style="background-color:#c0c0c0"><a href="Rapid_Transit_Series" title="Rapid Transit Series">RTS</a>
</td>
<td colspan="9" style="background-color:#c0c0c0">MCI <a href="Rapid_Transit_Series" title="Rapid Transit Series">RTS</a>
</td>
<td colspan="3" style="background-color:#c0c0c0">NovaBus <a href="Rapid_Transit_Series" title="Rapid Transit Series">RTS</a><br><small>(to 2003)</small>
</td></tr>
<tr style="background-color:#E0E0E0;">
<td rowspan="2" style="background-color:#F0F0F0"><a href="Coach_(bus)" title="Coach (bus)">Highway coach</a>
</td>
<td colspan="6">
</td>
<td colspan="3" style="background-color:#c0c0c0">"Pre-Parlor"
</td>
<td colspan="5" style="background-color:#c0c0c0"><a href="GM_PD-4103" title="GM PD-4103">"Parlor"</a>
</td>
<td colspan="12" style="background-color:#c0c0c0">"Highway Traveler"
</td>
<td colspan="15" style="background-color:#c0c0c0"><a href="GM_Buffalo_bus" title="GM Buffalo bus">"Buffalo"</a>
</td>
<td colspan="19">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td colspan="7">
</td>
<td colspan="2" style="background-color:#c0c0c0">"Silversides"<br><small>(<a href="Greyhound_Bus_Lines" class="mw-redirect" title="Greyhound Bus Lines">Greyhound</a>)</small>
</td>
<td colspan="5">
</td>
<td colspan="3" style="background-color:#c0c0c0"><a href="PD-4501_Scenicruiser" title="PD-4501 Scenicruiser">"Scenicruiser"</a><br><small>(<a href="Greyhound_Bus_Lines" class="mw-redirect" title="Greyhound Bus Lines">Greyhound</a>)</small>
</td>
<td colspan="43">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td rowspan="1" style="background-color:#F0F0F0">Cowled chassis (<a href="School_bus" title="School bus">school bus</a>)
</td>
<td colspan="26">
</td>
<td colspan="18" style="background-color:#c0c0c0"><a href="Chevrolet/GMC_B_series#First_generation_(1966–1983)" title="Chevrolet/GMC B series">B (gen 1)</a>
</td>
<td colspan="8" style="background-color:#c0c0c0"><a href="Chevrolet/GMC_B_series#Second_generation_(1984–1991)" title="Chevrolet/GMC B series">B (gen 2)</a>
</td>
<td colspan="8" style="background-color:#c0c0c0"><a href="Chevrolet/GMC_B_series#Third_generation_(1993–2003)" title="Chevrolet/GMC B series">B (gen 3)</a><br><small>(to 2003)</small>
</td></tr>
<tr style="background-color:#E0E0E0;">
<td rowspan="2" style="background-color:#F0F0F0">Concept buses
</td>
<td colspan="2" style="background-color:#c0c0c0"><a href="GM_Futurliner" title="GM Futurliner">Futurliner</a><br><small>(from 1936)</small>
</td>
<td colspan="6">
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="GX-1_(bus)" title="GX-1 (bus)">GX-1</a>
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="GX-1_(bus)" title="GX-1 (bus)">GX-2</a>
</td>
<td colspan="3">
</td>
<td colspan="4" style="background-color:#c0c0c0"><a href="GM_Futurliner" title="GM Futurliner">Futurliner</a>
</td>
<td colspan="43">
</td></tr>
<tr style="background-color:#E0E0E0;">
<td colspan="13">
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="GM_%22old-look%22_transit_bus#Turbo-Cruiser_I" title="GM &quot;old-look&quot; transit bus">TC I</a>
</td>
<td colspan="10">
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="GM_New_Look_bus#Variants_based_on_the_New_Look" title="GM New Look bus">TC II</a>
</td>
<td colspan="3">
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="GM_New_Look_bus#Variants_based_on_the_New_Look" title="GM New Look bus">TC III</a>, <a href="Rapid_Transit_Series#Pre-production" title="Rapid Transit Series">RTX</a>
</td>
<td colspan="2">
</td>
<td colspan="1" style="background-color:#c0c0c0"><a href="Transbus_project" class="mw-redirect" title="Transbus project">RTS 3T</a>
</td>
<td colspan="41">
</td></tr></tbody></table>
<dl><dt>Notes</dt></dl>
<p>GM acquired <a href="Yellow_Coach" class="mw-redirect" title="Yellow Coach">Yellow Coach</a> in 1943 and continued production of the "Old Look" bus originally designed by Yellow Coach. GM ended bus production in 1987 after selling its bus division and assets to <a href="Motor_Coach_Industries" title="Motor Coach Industries">Motor Coach Industries</a>, which continued production of the New Look-derived Classic and RTS.
</p>
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