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<!DOCTYPE html>

<title>Continuous-flow intersection</title>

</head>

<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Continuous-flow intersection</span></span>

</h1>

</header>

<p>A <b>continuous flow intersection</b> (<b>CFI</b>), also called a <b>crossover displaced left-turn</b> (<b>XDL</b> or <b>DLT</b>), is an alternative design for an <a href="Intersection_(road)" title="Intersection (road)">at-grade road junction</a>. Vehicles attempting to turn across the opposing direction of traffic (left in <a href="Right-_and_left-hand_traffic" class="mw-redirect" title="Right- and left-hand traffic">right-hand drive</a> jurisdictions; right in left-hand drive jurisdictions) cross before they enter the intersection. No left turn signal in the intersection is then necessary. Instead, vehicles traveling in both directions can proceed, including through vehicles and those turning right or left, when a generic traffic signal/stop sign permits.

</p><p>Its design also is promoted as part of the Federal Highway Administration's <a href="Every_Day_Counts_initiative" class="mw-redirect" title="Every Day Counts initiative">Every Day Counts initiative</a> which started in 2011.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>

<p>A fly-over designed CFI <a href="Interchange_(road)" title="Interchange (road)">interchange</a> (separated grade) was invented by Francisco Mier. An intersection (at-grade) variant followed. Over 40 have been implemented since 2000. Mier patented his design and required a fee to obtain a license to the design.<sup id="cite_ref-Hummer_2-0" class="reference"><a href="#cite_note-Hummer-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The patent expired in the United States on 15 October 2003.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>

</p><p>This general configuration has appeared in different versions in various places, with the implementation of <a href="Channelization_(roads)" title="Channelization (roads)">channelization</a> in the United States since the 1950s, such as the Telegraph Road section of <a href="U.S._Route_24_in_Michigan" title="U.S. Route 24 in Michigan">U.S. Route 24 in Michigan</a> at Plymouth Road in <a href="Redford_Charter_Township%2C_Michigan" class="mw-redirect" title="Redford Charter Township, Michigan">Redford Charter Township, Michigan</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2></div>

<caption>List of places where a CFI is used

</caption>

<th>Country

</th>

<th>State/Province

</th>

<th>City

</th>

<th>Roads

</th>

<th>Opening date

</th>

<th>Coordinates

</th>

<th>Notes

</th></tr>

<tr>

<td rowspan="3"><a href="Australia" title="Australia">Australia</a>

</td>

<td><a href="Queensland" title="Queensland">Queensland</a>

</td>

<td><a href="Gold_Coast%2C_Queensland" title="Gold Coast, Queensland">Gold Coast</a>

</td>

<td>Salerno Street, Bundall Road and Ashmore Road

</td>

<td>December 2017

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td><a href="Victoria_(state)" title="Victoria (state)">Victoria</a>

</td>

<td><a href="Melbourne" title="Melbourne">Melbourne</a>

</td>

<td>Hoddle Street

</td>

<td>2017

</td>

<td>

</td>

</td></tr>

<tr>

<td><a href="New_South_Wales" title="New South Wales">New South Wales</a>

</td>

<td><a href="Moore_Park%2C_New_South_Wales" title="Moore Park, New South Wales">Moore Park</a>

</td>

<td>Intersection of <a href="Anzac_Parade%2C_Sydney" title="Anzac Parade, Sydney">Anzac Parade</a>, Alison Road and Dacey Avenue

</td>

<td>2017

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td><a href="Canada" title="Canada">Canada</a>

</td>

<td><a href="Prince_Edward_Island" title="Prince Edward Island">Prince Edward Island</a>

</td>

<td><a href="Charlottetown" title="Charlottetown">Charlottetown</a>

</td>

<td><a href="Prince_Edward_Island_Route_1" title="Prince Edward Island Route 1">Charlottetown Perimeter Highway</a> and <a href="Prince_Edward_Island_Route_2" title="Prince Edward Island Route 2">St. Peters Road</a>

</td>

<td>November 29, 2020

</td>

<td>46.268692°N 63.114001°W

</td>

</td></tr>

<tr>

<td><a href="China" title="China">China</a>

</td>

<td><a href="Guangdong" title="Guangdong">Guangdong</a>

</td>

<td><a href="Shenzhen" title="Shenzhen">Shenzhen</a>

</td>

<td>Caitian Road and Fuhua

</td>

<td>October 7, 2017

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td><a href="Germany" title="Germany">Germany</a>

</td>

<td>

</td>

<td><a href="Hamburg" title="Hamburg">Hamburg</a>

</td>

<td>Breitenfelder Straße (<a href="Bundesstra%C3%9Fe_5" title="Bundesstraße 5">Bundesstraße 5</a>) and Tarpenbekstraße (<a href="Bundesstra%C3%9Fe_433" title="Bundesstraße 433">Bundesstraße 433</a>)

</td>

<td>

</td>

<td>53.590267°N 9.982989°E

</td>

<td>

</td></tr>

<tr>

<td rowspan="3"><a href="Mexico" title="Mexico">Mexico</a>

</td>

<td><a href="Coahuila" title="Coahuila">Coahuila</a>

</td>

<td><a href="Saltillo" title="Saltillo">Saltillo</a>

</td>

<td>Paseo de la Reforma and Periférico und Luis Echeverría

</td>

<td>

</td>

<td>25.42739°N 100.969859°W

</td>

<td>Former configuration, now a <a href="Directional_interchange" class="mw-redirect" title="Directional interchange">directional interchange</a>

</td></tr>

<tr>

<td><a href="Chihuahua_(state)" title="Chihuahua (state)">Chihuahua</a>

</td>

<td><a href="Ju%C3%A1rez_Municipality%2C_Chihuahua" title="Juárez Municipality, Chihuahua">Juárez Municipality</a>

</td>

<td>Manuel Gómez Morin Bermúdez aund De La Industria

</td>

<td>

</td>

<td>31.70368°N 106.401998°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Nuevo_Le%C3%B3n" title="Nuevo León">Nuevo León</a>

</td>

<td><a href="Guadalupe_Island" title="Guadalupe Island">Guadalupe Island</a>

</td>

<td>Between Chapultepec, Puesta del Sol and Av Eloy Cavazos

</td>

<td>

</td>

<td>25.661967°N 100.258747°W

</td>

<td>

</td></tr>

<tr>

<td><a href="United_Kingdom" title="United Kingdom">United Kingdom</a>

</td>

<td>

</td>

<td><a href="Swindon" title="Swindon">Swindon</a>

</td>

<td><a href="A4311_road" class="mw-redirect" title="A4311 road">A4311 road</a>, Cricklade Road and Thamesdown Drive

</td>

<td>2003

</td>

<td>51.601158562°N 1.7812545°W

</td>

<td>

</td></tr>

<tr>

<td rowspan="38"><a href="United_States" title="United States">United States</a>

</td>

<td rowspan="2"><a href="New_Jersey" title="New Jersey">New Jersey</a>

</td>

<td><a href="Camden%2C_New_Jersey" title="Camden, New Jersey">Camden</a>

</td>

<td>New Jersey Route 168 at US Route 130

</td>

<td>

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td><a href="Audubon%2C_New_Jersey" title="Audubon, New Jersey">Audubon, New Jersey</a>

</td>

<td><a href="New_Jersey_Route_168" title="New Jersey Route 168">New Jersey Route 168</a> at Nicholson Road

</td>

<td>

</td>

<td>39.894161°N 75.091435°W

</td>

<td>

</td></tr>

<tr>

</td>

<td><a href="Shirley%2C_New_York" title="Shirley, New York">Shirley</a>

</td>

<td>

</td>

<td>1996

</td>

<td>40.826443°N 72.881042°W

</td>

<td>

</td></tr>

<tr>

<td rowspan="2"><a href="Maryland" title="Maryland">Maryland</a>

</td>

<td><a href="Accokeek%2C_Maryland" title="Accokeek, Maryland">Accokeek</a>

</td>

<td><a href="Maryland_Route_210" title="Maryland Route 210">Routes 210</a> and <a href="Maryland_Route_228" title="Maryland Route 228">228</a>

</td>

<td>2000

</td>

<td>38.664126°N 77.016928°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Laurel%2C_Maryland" title="Laurel, Maryland">Laurel</a>

</td>

</td>

<td>November 7, 2014

</td>

<td>39.065800°N 76.881176°W

</td>

<td>

</td></tr>

<tr>

<td rowspan="2"><a href="Louisiana" title="Louisiana">Louisiana</a>

</td>

<td><a href="Baton_Rouge%2C_Louisiana" title="Baton Rouge, Louisiana">Baton Rouge</a>

</td>

<td><a href="Airline_Highway" title="Airline Highway">Airline Highway</a> and <a href="Louisiana_Highway_3246" class="mw-redirect" title="Louisiana Highway 3246">Siegen Lane</a>

</td>

<td>March 2006

</td>

<td>30.398914°N 91.054119°W

</td>

</td></tr>

<tr>

<td><a href="Lafayette%2C_Louisiana" title="Lafayette, Louisiana">Lafayette</a>

</td>

<td><a href="U.S._Route_167#Johnston_Street_in_Lafayette,_Louisiana" title="U.S. Route 167">US 167 (Johnston St.)</a> and Camellia Boulevard

</td>

<td>2010

</td>

<td>30.193744°N 92.058622°W

</td>

<td>

</td></tr>

<tr>

</td>

<td><a href="Taylorsville%2C_Utah" title="Taylorsville, Utah">Taylorsville</a>

</td>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and <a href="Utah_State_Route_173" title="Utah State Route 173">5400 South (SR-173)</a>

</td>

<td>

</td>

<td>40.652993°N 111.981339°W

</td>

<td>No longer exists<sup id="cite_ref-:0_8-0" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

</td></tr>

<tr>

<td rowspan="7"><a href="West_Valley_City%2C_Utah" title="West Valley City, Utah">West Valley City</a>

</td>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 4700 South

</td>

<td>

</td>

<td>40.667596°N 111.981567°W

</td>

<td>No longer exists

</td></tr>

<tr>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 4100 South

</td>

<td>

</td>

<td>40.682132°N 111.981626°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and <a href="Utah_State_Route_171" title="Utah State Route 171">3500 South (SR-171)</a>

</td>

<td>September 2007

</td>

<td>40.696629°N 111.980869°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 3100 South

</td>

<td>

</td>

<td>40.703918°N 111.980076°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 6200 South (Bennion Boulevard)

</td>

<td>

</td>

<td>40.638581°N 111.976637°W

</td>

<td>No longer exists

</td></tr>

<tr>

<td><a href="Utah_State_Route_173" title="Utah State Route 173">5400 S (SR-173)</a> and <a href="Redwood_Road" class="mw-redirect" title="Redwood Road">Redwood Road</a>

</td>

<td>

</td>

<td>40.653176°N 111.938802°W

</td>

<td>

</td></tr>

<tr>

<td>6200 South (Bennion Boulevard) and <a href="Redwood_Road" class="mw-redirect" title="Redwood Road">Redwood Road</a>

</td>

<td>

</td>

<td>40.638574°N 111.938824°W

</td>

</td></tr>

<tr>

<td><a href="Riverton%2C_Utah" title="Riverton, Utah">Riverton</a>

</td>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 13400 South

</td>

<td>

</td>

<td>40.507803°N 111.982747°W

</td>

<td>

</td></tr>

<tr>

<td><a href="West_Jordan%2C_Utah" title="West Jordan, Utah">West Jordan</a>

</td>

<td><a href="Bangerter_Highway" class="mw-redirect" title="Bangerter Highway">Bangerter Highway</a> and 7000 South

</td>

<td>

</td>

<td>40.623983°N 111.976422°W

</td>

<td>No longer exists<sup id="cite_ref-:0_8-1" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

</td></tr>

<tr>

</td>

<td><a href="Utah_State_Route_265" title="Utah State Route 265">University Parkway</a> and Sandhill Road

</td>

<td>May 22, 2012

</td>

<td>40.275014°N 111.713445°W

</td>

</td></tr>

<tr>

<td rowspan="2"><a href="Mississippi" title="Mississippi">Mississippi</a>

</td>

<td><a href="Natchez%2C_Mississippi" title="Natchez, Mississippi">Natchez</a>

</td>

<td><a href="U.S._Route_61#Mississippi" title="U.S. Route 61">US 61</a> and Junkin Drive

</td>

<td>January 2010

</td>

<td>31.528599°N 91.389213°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Oxford%2C_Mississippi" title="Oxford, Mississippi">Oxford</a>

</td>

<td><a href="Mississippi_Highway_6" title="Mississippi Highway 6">Mississippi Highway 6</a> and West Jackson Avenue

</td>

<td>April 29, 2015

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td rowspan="3"><a href="Colorado" title="Colorado">Colorado</a>

</td>

<td><a href="Loveland%2C_Colorado" title="Loveland, Colorado">Loveland</a>

</td>

<td><a href="U.S._Route_34_in_Colorado#Estes_Park_to_Loveland" title="U.S. Route 34 in Colorado">US 34 (Eisenhower Boulevard)</a> and Madison Avenue

</td>

<td>

</td>

<td>40.407365°N 105.058764°W

</td>

</td></tr>

<tr>

<td><a href="Durango%2C_Colorado" title="Durango, Colorado">Durango</a>

</td>

</td>

<td>

</td>

<td>37.268540°N 107.884992°W

</td>

</td></tr>

<tr>

<td><a href="Colorado_Springs%2C_Colorado" title="Colorado Springs, Colorado">Colorado Springs</a>

</td>

<td>Woodmen Road and Union Boulevard

</td>

<td>December 2017

</td>

<td>38.933079°N 104.775202°W

</td>

</td></tr>

<tr>

<td><a href="North_Carolina" title="North Carolina">North Carolina</a>

</td>

<td><a href="Charlotte%2C_North_Carolina" title="Charlotte, North Carolina">Charlotte</a>

</td>

<td><a href="NC_16" class="mw-redirect" title="NC 16">NC 16</a> to Mount Holly-Huntersville Road

</td>

<td>October 18, 2019

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td rowspan="4"><a href="Texas" title="Texas">Texas</a>

</td>

<td><a href="Cedar_Park%2C_Texas" title="Cedar Park, Texas">Cedar Park</a>

</td>

<td><a href="Ranch_to_Market_Road_1431" title="Ranch to Market Road 1431">RM 1431</a> and Ronald Reagan Boulevard/<a href="Farm_to_Market_Road_734" title="Farm to Market Road 734">Parmer Lane</a>

</td>

<td>August 2, 2016

</td>

<td>30.534659°N 97.782645°W

</td>

<td>

</td></tr>

<tr>

<td rowspan="2"><a href="San_Marcos%2C_Texas" title="San Marcos, Texas">San Marcos</a>

</td>

<td><a href="Texas_State_Highway_Loop_82" class="mw-redirect" title="Texas State Highway Loop 82">Loop 82</a> (Aquarena Springs Drive) and <a href="I-35" class="mw-redirect" title="I-35">I-35</a>'s southbound-to-northbound <a href="Texas_U-turn" title="Texas U-turn">Texas U-turn</a>

</td>

<td>

</td>

<td>29.893048°N 97.913367°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Texas_State_Highway_80" title="Texas State Highway 80">State Highway 80</a> (Hopkins Street), I-35's frontage roads and I-35's Texas U-turns

</td>

<td>

</td>

<td>29.882639°N 97.921915°W

</td>

<td>

</td></tr>

<tr>

<td><a href="San_Antonio" title="San Antonio">San Antonio</a>

</td>

<td>Bandera Road and <a href="Loop_1604" class="mw-redirect" title="Loop 1604">Loop 1604</a>

</td>

<td>April 28, 2019

</td>

<td>29.553655°N 98.667302°W

</td>

</td></tr>

<tr>

<td><a href="Georgia_(U.S._state)" title="Georgia (U.S. state)">Georgia</a>

</td>

<td><a href="Dawsonville%2C_Georgia" title="Dawsonville, Georgia">Dawsonville</a>

</td>

</td>

<td>May 15, 2017

</td>

<td>34.363385°N 84.036474°W

</td>

</td></tr>

<tr>

<td rowspan="3"><a href="Indiana" title="Indiana">Indiana</a>

</td>

<td><a href="Indianapolis" title="Indianapolis">Indianapolis</a>

</td>

<td><a href="U.S._Route_31_in_Indiana" title="U.S. Route 31 in Indiana">US 31</a> and Thompson Road

</td>

<td>October 8, 2022

</td>

<td>39.693213°N 86.148812°W

</td>

</td></tr>

<tr>

<td><a href="Ohio_Township%2C_Warrick_County%2C_Indiana" title="Ohio Township, Warrick County, Indiana">Ohio Township (Warrick County)</a>

</td>

<td><a href="Indiana_State_Road_66" title="Indiana State Road 66">IN 66</a> and Epworth Road

</td>

<td>August 20, 2024

</td>

<td>37.976790°N 87.441226°W

</td>

</td></tr>

<tr>

<td><a href="Evansville%2C_Indiana" title="Evansville, Indiana">Evansville</a>

</td>

<td><a href="Indiana_State_Road_66" title="Indiana State Road 66">IN 66</a> and Stockwell Road

</td>

<td>June 18, 2025

</td>

<td>37.976675°N 87.502408°W

</td>

<td>Hybrid design with one displaced left turn and a <a href="Michigan_left" title="Michigan left">Michigan left</a> as the other turn. <sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup>

</td></tr>

<tr>

</td>

<td><a href="Anderson_Township%2C_Ohio" title="Anderson Township, Ohio">Anderson Township</a>

</td>

<td><a href="Ohio_State_Route_125" title="Ohio State Route 125">Beechmont Avenue</a> (State Route 125) and Five Mile Road

</td>

<td>May 19, 2017

</td>

<td>39°4′22″N 84°21′7″W

</td>

</td></tr>

<tr>

<td><a href="Miami_Township%2C_Montgomery_County%2C_Ohio" title="Miami Township, Montgomery County, Ohio">Miami Township (Montgomery County)</a>

</td>

<td><a href="Ohio_State_Route_741" title="Ohio State Route 741">SR 741</a> and Miamisburg-Springboro Road/Austin Boulevard

</td>

<td>2009

</td>

<td>39.596709°N 84.229029°W

</td>

</td></tr>

<tr>

<td><a href="Virginia" title="Virginia">Virginia</a>

</td>

<td><a href="Norfolk%2C_Virginia" title="Norfolk, Virginia">Norfolk</a>

</td>

<td>Military Highway onto Northampton Boulevard and Princess Anne Road

</td>

<td>July 28, 2018

</td>

<td>36.874804°N 76.210739°W

</td>

<td>

</td></tr>

<tr>

<td><a href="Florida" title="Florida">Florida</a>

</td>

<td><a href="Fort_Myers%2C_Florida" title="Fort Myers, Florida">Fort Myers</a>

</td>

<td><a href="Florida_State_Road_82" title="Florida State Road 82">State Road 82</a> to Daniels Parkway (west) and Gunnery Road (east)

</td>

<td>July 9, 2019

</td>

<td>26.581661°N 81.713761°W

</td>

</td></tr>

<tr>

<td><a href="Kansas" title="Kansas">Kansas</a>

</td>

<td><a href="Olathe%2C_Kansas" title="Olathe, Kansas">Olathe</a>

</td>

<td>Old 56 Highway to Lone Elm Road

</td>

<td>June 2021

</td>

<td>

</td>

<td>

</td></tr>

<tr>

<td><a href="Missouri" title="Missouri">Missouri</a>

</td>

<td><a href="Fenton%2C_Missouri" title="Fenton, Missouri">Fenton</a>

</td>

<td><a href="Missouri_Route_30" title="Missouri Route 30">Highway 30</a> and Summit Drive/Gravois Bluffs Boulevard

</td>

<td>October 2007

</td>

<td>38.504276°N 90.456995°W

</td>

</td></tr></tbody></table>

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<div class="mw-heading mw-heading2"><h2 id="Operational_details">Operational details</h2></div>

<p>Part of the delay at a typical high-volume right-hand traffic intersection is to accommodate left-turns; through-traffic must wait for the traffic turning left because it crosses the path of the through traffic. The continuous flow intersection moves the left-turn conflict out of the intersection and synchronizes it with the signal cycle of the intersecting road.

</p><p>In the adjacent diagram, while the left/right traffic flows through the main intersection, the left-turn traffic crosses to the opposite side of the oncoming traffic a few hundred feet away. Doing this removes the crossing conflict. When the north/south through traffic is allowed through the main intersection, the north/south left-turn lanes are also allowed through the intersections as their paths are no longer crossing. All traffic flow is controlled by traffic signals as at a regular intersection.

</p><p>The Louisiana DOTD article on the Baton Rouge CFI includes a particularly informative diagram of that intersection.<sup id="cite_ref-Louisiana_7-1" class="reference"><a href="#cite_note-Louisiana-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>

</p><p>To reduce confusion regarding the left-turn lane, the left-turn lane and the straight-through lanes are usually separated by a <a href="Jersey_barrier" title="Jersey barrier">concrete barrier</a> or <a href="Traffic_island" title="Traffic island">traffic island</a>. This diagram shows the straight-through lanes offset by one lane through the intersection and are guided by lines painted through the intersection. But this is just a sample configuration; the lanes may be offset by more lanes or none at all.

</p><p>Nonetheless, due to the provision of traffic between two directions of opposing traffic, some motorists tend to maintain an ongoing criticism of the intersection. Additionally, as in the case of the half-CFI in Accokeek, the offset left-turn traffic reenters the main traffic stream via a half-signal, requiring motorists to merge from a stop condition onto the higher-speed mainline. Motorists sometimes cite discomfort due to the speed differential, a known cause of accidents, though conflicts can be reduced through the provision of an adequate acceleration lane and merge area. The <a href="Accokeek%2C_Maryland" title="Accokeek, Maryland">Accokeek, Maryland</a> CFI also has notable inequalities in traffic flow depending upon the direction of travel.

</p><p>This type of intersection can require a significant amount of right-of-way to implement (dependent upon the configuration), which is why the technique is not frequently used in urban areas. However, the amount of right-of-way necessary for construction and final operation is still typically less than that of an interchange. Additionally, as there is no grade separation involved, costs are considerably less than that of an interchange alternative.

</p>

<div class="mw-heading mw-heading2"><h2 id="Case_studies">Case studies</h2></div>

<p>The redesign of the Redwood Road/6200 South intersection in Taylorsville, Utah cut emissions of <a href="Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a> by 19 <a href="Short_ton" title="Short ton">tons</a> (17 <a href="Tonne" title="Tonne">tonnes</a>) per year.<sup id="cite_ref-:1_9-1" class="reference"><a href="#cite_note-:1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Compared to the previous design, the redesign of the Bangerter Highway/3500 South intersection saves <style data-mw-deduplicate="TemplateStyles:r1154941027">

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</style><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> minutes of travel time per vehicle and 800,000 U.S. gallons (3,000,000 liters) of fuel per year, and has 60% fewer accidents nearby; it also cost $20 million to $40 million less in construction costs than a grade-separated alternative.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Parallel-flow_intersection">Parallel-flow intersection</h2></div>

<p>A <b>parallel-flow intersection</b> (<b>PFI</b>) is a variant similar to the CFI, patented in 2006.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> It arranges the left-turning traffic in a different manner; it is not displaced, instead turning left closer to the intersection onto a parallel roadway, to the left of oncoming traffic.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> This was first used in <a href="New_Jersey" title="New Jersey">New Jersey</a> at the junction of <a href="New_Jersey_Route_168" title="New Jersey Route 168">New Jersey Route 168</a> and <a href="U.S._Route_130" title="U.S. Route 130">US Highway 130</a>, between <a href="Haddon_Township%2C_New_Jersey" title="Haddon Township, New Jersey">Haddon Township</a> and <a href="Camden%2C_New_Jersey" title="Camden, New Jersey">Camden</a> (<span class="geo-inline"><style data-mw-deduplicate="TemplateStyles:r1156832818">

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</style><span class=" nourlexpansion"><a class="external text" href="geo:39.90412,-75.095812"><span class="geo-nondefault"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">39°54′15″N</span> <span class="longitude">75°05′45″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">39.90412°N 75.095812°W</span><span style="display:none"> / <span class="geo">39.90412; -75.095812</span></span></span></a></span></span>).

</p>

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</style><div class="div-col" style="column-width: 20em;">

<ul><li><a href="Junction_(road)" class="mw-redirect" title="Junction (road)">Junction (road)</a></li>

<li><a href="Advanced_stop_line" title="Advanced stop line">Advanced stop line</a></li>

<li><a href="Bowtie_(road)" title="Bowtie (road)">Bowtie</a></li>

<li><a href="Box_junction" title="Box junction">Box junction</a></li>

<li><a href="Jughandle" title="Jughandle">Jughandle</a></li>

<li><a href="Michigan_left" title="Michigan left">Michigan left</a></li>

<li><a href="Quadrant_roadway_intersection" title="Quadrant roadway intersection">Quadrant roadway intersection</a></li>

<li><a href="Roundabout" title="Roundabout">Roundabout</a></li>

<li><a href="Seagull_intersection" title="Seagull intersection">Seagull intersection</a></li>

<li><a href="Staggered_junction" class="mw-redirect" title="Staggered junction">Staggered junction</a></li>

<li><a href="Superstreet" title="Superstreet">Superstreet</a></li>

<li><a href="Texas_T" title="Texas T">Texas T</a></li>

<li><a href="Texas_U-turn" title="Texas U-turn">Texas U-turn</a></li>

<li><a href="Turnaround_(road)" title="Turnaround (road)">Turnaround (road)</a></li></ul></div>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite id="CITEREFSchroederCunninghamRayDaleiden2014" class="citation book cs1">Schroeder, Bastian; Cunningham, Chris; Ray, Brian; Daleiden, Andy; Jenior, Pete; Knudsen, Julia (August 2014). <a rel="nofollow" class="external text" href="https://rosap.ntl.bts.gov/view/dot/29474/dot_29474_DS1.pdf?download-document-submit=Download"><i>Diverging Diamond Interchange Informational Guide</i></a> <span class="cs1-format">(PDF)</span>. Washington, DC: Federal Highway Administration Office of Safety.</cite></span>

</li>

<li id="cite_note-Hummer-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-Hummer_2-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFHummerReid" class="citation web cs1">Hummer, Joseph E.; Reid, Jonathan D. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070930055756/http://www.urbanstreet.info/1st_symp_proceedings/Ec019_e3.pdf">"Unconventional Left-Turn Alternatives for Urban and Suburban Arterials"</a> <span class="cs1-format">(PDF)</span>. Transportation Research Board. Archived from <a rel="nofollow" class="external text" href="http://www.urbanstreet.info/1st_symp_proceedings/Ec019_e3.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 30 September 2007<span class="reference-accessdate">. Retrieved <span class="nowrap">13 June</span> 2007</span>.</cite></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"><a rel="nofollow" class="external text" href="http://portal.uspto.gov/external/portal/pair">United States Patent and Trademark Office</a>, <style data-mw-deduplicate="TemplateStyles:r1041539562">

/* start https://en.wikipedia.org/ */

.mw-parser-output .citation{word-wrap:break-word}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}

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</style><span class="citation patent"><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US">US</a></span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=US&rft.cc=&rft.title="><span style="display: none;"> </span></span> 5049000</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">Telegraph Road, Michigan <span class="geo-inline"><span class=" nourlexpansion"><a class="external text" href="geo:42.371267,-83.275563"><span class="geo-nondefault"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">42°22′17″N</span> <span class="longitude">83°16′32″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">42.371267°N 83.275563°W</span><span style="display:none"> / <span class="geo">42.371267; -83.275563</span></span></span></a></span></span></span>

</li>

<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><cite id="CITEREFTomazin2015" class="citation web cs1">Tomazin, Farrah (2015-03-21). <a rel="nofollow" class="external text" href="https://www.theage.com.au/national/victoria/radical-plan-to-ease-hoddle-street-gridlock-20150321-1m4iyz.html">"Radical plan to ease Hoddle Street gridlock"</a>. <i>The Age</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

</li>

<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite id="CITEREFToolkit2020" class="citation web cs1">Toolkit, Web Experience (2020-11-03). <a rel="nofollow" class="external text" href="https://www.princeedwardisland.ca/en/information/transportation-and-infrastructure/displaced-left-turn-intersection">"Displaced Left Turn Intersection"</a>. <i>www.princeedwardisland.ca</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

</li>

<li id="cite_note-Louisiana-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-Louisiana_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Louisiana_7-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFRuiz_de_Chavez2006" class="citation web cs1">Ruiz de Chavez, Lindsay (2006-03-21). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100527101018/http://www.dotd.louisiana.gov/pressreleases/Release.aspx?key=627">"First 'continuous-flow' intersection in the state opens on Airline today"</a>. Louisiana Department of Transportation & Development. Archived from <a rel="nofollow" class="external text" href="http://www.dotd.louisiana.gov/pressreleases/Release.aspx?key=627">the original</a> on 2010-05-27<span class="reference-accessdate">. Retrieved <span class="nowrap">4 August</span> 2018</span>.</cite></span>

</li>

<li id="cite_note-:0-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://huntelectric.com/article/30/bangerter-highway-project-highlight">"Bangerter Highway Project Highlight"</a>. <i>Hunt Electric</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

</li>

<li id="cite_note-:1-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-:1_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:1_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">FHWA: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=eKAONboIzao">DLT Case Study – Redwood Road at 6200 South in Taylorsville (Utah)</a>, published July 31, 2014</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"><cite id="CITEREFFederal_Highway_Administration_USDOTFHWA2014" class="citation audio-visual cs1">Federal Highway Administration USDOTFHWA (2014-07-31). <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=eKAONboIzao"><i>DLT Case Study – Redwood Road at 6200 South in Taylorsville (Utah)</i></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span> – via YouTube.</cite></span>

</li>

<li id="cite_note-auto-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-auto_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-auto_11-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/sry">"Internet Archive: Scheduled Maintenance"</a>. <i>web.archive.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

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<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.codot.gov/projects/us160_us550durangocfi">"US 160/US 550 Durango Continuous Flow Intersection"</a>. <i>CODOT.gov</i>.</cite></span>

</li>

<li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><cite class="citation audio-visual cs1"><a rel="nofollow" class="external text" href="https://vimeo.com/245055910"><i>Woodmen Road Corridor CFI Intersection (long version)</i></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span> – via vimeo.com.</cite></span>

</li>

<li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><cite id="CITEREFTxdotsanantonio2019" class="citation web cs1">Txdotsanantonio (April 26, 2019). <a rel="nofollow" class="external text" href="http://txdotsanantonio.blogspot.com/2019/04/ready-san-antonio-we-appreciate-your.html">"Go Ahead!: It's Here: SA's First DLT Intersection Opens This Weekend"</a>. <i>Go Ahead!</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></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 class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gainesvilletimes.com/news/continuous-flow-intersection-now-open-in-dawson/">"Continuous flow intersection now open in Dawson"</a>. <i>www.gainesvilletimes.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

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<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.in.gov/indot/about-indot/Blog/indot-opens-states-first-displaced-left-turn/">"INDOT Opens State's First Displaced Left Turn"</a>. <i>IN.gov</i>. 24 February 2023<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-11-22</span></span>.</cite></span>

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<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.tristatehomepage.com/news/displaced-left-turn-set-to-open-at-state-road-66-and-epworth/">"Displaced left turn set to open at State Road 66 and Epworth"</a>. <i>TristateHomepage.com</i>. 2024-08-14<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-11-22</span></span>.</cite></span>

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<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.14news.com/2025/06/16/official-schedule-lloyd4u-work-released/">"Official schedule for Lloyd4U work released"</a>. <i>WFIE</i>. 2025-06-16<span class="reference-accessdate">. Retrieved <span class="nowrap">2025-07-11</span></span>.</cite></span>

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<li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.wcpo.com/news/local-news/hamilton-county/anderson-township/new-continuous-flow-intersection-beechmont-five-mile-in-anderson-township-opening-may-19">"How does the new Anderson Twp intersection work?"</a>. <i>WCPO 9 Cincinnati</i>. 2017-05-08<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></span>

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<li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090102062830/https://www.dot.state.oh.us/districts/D07/Projects/Pages/AustinPike.aspx">"Austin Pike"</a>. 2009-01-02. Archived from <a rel="nofollow" class="external text" href="https://www.dot.state.oh.us/districts/D07/Projects/Pages/AustinPike.aspx">the original</a> on 2009-01-02<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></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"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.fox4now.com/news/local-news/continuous-flow-intersection-now-open-in-lee-county">"New Continuous Flow Intersection now open in Lehigh Acres"</a>. <i>FOX 4 News Fort Myers WFTX</i>. 2019-07-09<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></span>.</cite></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 web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070927223552/http://www.modot.org/stlouis/links/ContinuousFlowIntersections2.htm">"Continuous Flow Intersections2"</a>. 2007-09-27. Archived from <a rel="nofollow" class="external text" href="http://www.modot.org/stlouis/links/ContinuousFlowIntersections2.htm">the original</a> on 2007-09-27<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-18</span></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">FHWA: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=o5-U_TgEtJA">DLT Case Study – Bangerter Highway in Salt Lake County (Utah)</a>, published July 31, 2014</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"><span class="citation patent" id="CITEREFGregory_Fife_Parsons2006"><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US7135989">B2 US patent 7135989 B2</a>, Gregory Fife Parsons, "Parallel flow vehicle turn system for traffic intersections", issued 2006-11-14, assigned to Gregory Fife Parsons</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=7135989 B2&rft.cc=US&rft.title=Parallel+flow+vehicle+turn+system+for+traffic+intersections&rft.inventor=Gregory+Fife+Parsons&rft.assignee=Gregory+Fife+Parsons&rft.date=2006-11-14&rft.appldate=2004-09-27&rft.prioritydate=2004-09-27"><span style="display: none;"> </span></span></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">Federal Highway Administration: <a rel="nofollow" class="external text" href="https://www.fhwa.dot.gov/publications/research/safety/09060/006.cfm"><i>Alternative Intersections/Interchanges: Informational Report (AIIR)</i></a>, Publication Number: <i>FHWA-HRT-09-060</i>, April 2010</span>

</li>

</ol></div>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a href="Federal_Highway_Administration" title="Federal Highway Administration">Federal Highway Administration</a>, <a rel="nofollow" class="external text" href="http://www.tfhrc.gov/safety/pubs/04091/10.htm#1023">Alternative Intersection Treatments - CFI</a></li>

<li><a href="University_of_Maryland%2C_College_Park" title="University of Maryland, College Park">University of Maryland</a>, <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110720090118/http://attap.umd.edu/UAID_ags.php?UAIDType=5&iFeature=2">ATTAP</a> - Animation of a CFI (QuickTime required). Additional information may be accessed via the links on the left side.

<dl><dd><small><i>Note that due to the relatively recent installation of the CFI in Baton Rouge, West Valley, UT, and Fenton, MO, some images may not show the existing conditions.</i></small></dd></dl></li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060623050623/http://deseretnews.com/dn/view/0,1249,610152168,00.html">Deseret News story about CFI</a></li>

<li><a rel="nofollow" class="external text" href="http://www.ksl.com/?nid=148&sid=109039">KSL News story about CFI</a></li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20050930182940/http://www.tfhrc.gov/pubrds/05jan/03.htm">U.S. Department of Transportation</a></li>

<li><a rel="nofollow" class="external text" href="http://www.natchezdemocrat.com/news/2009/dec/04/continuous-flow-intersection-opens/">CFI open in Natchez, MS</a></li>

<li>Seonyeong Cheong, Saed Rahwanji and Gang-Len Chang: <a rel="nofollow" class="external text" href="https://web.archive.org/web/20131230022522/http://attap.umd.edu/bbs/data/publications/Seonyeong_IEEE08_1.pdf">Comparison of Three Unconventional Arterial Intersection Designs: CFI, PFI and Upstream Signalized Crossover</a>, ATTAP, University of Maryland, 3 June 2008</li>

<li><a rel="nofollow" class="external text" href="http://www.virginiadot.org/FHWA-SA-14-068DLTInformationalGuide.pdf"><i>DISPLACED LEFT TURN INTERSECTION Informational Guide</i></a>, Federal Highway Administration, Publication No. FHWA-SA-14-068, August 2014</li></ul>

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</style><div id="Road_hierarchy361" style="font-size:114%;margin:0 4em"><a href="Road_hierarchy" title="Road hierarchy">Road hierarchy</a></div></th></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Types_of_road" title="Types of road">Types of road</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Limited-access_road" title="Limited-access road">Limited-access</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Bicycle_highway" title="Bicycle highway">Bicycle highway</a></li>

<li><a href="Controlled-access_highway" title="Controlled-access highway">Freeway / Motorway</a></li>

<li><a href="Dual_carriageway" title="Dual carriageway">Dual carriageway / Divided highway / Expressway</a></li>

<li><a href="Elevated_highway" title="Elevated highway">Elevated highway</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">By country</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Highways_in_Australia" title="Highways in Australia">Australia</a></li>

<li><a href="Transport_in_Belgium#Road_transport" title="Transport in Belgium">Belgium</a></li>

<li><a href="Brazilian_Highway_System" title="Brazilian Highway System">Brazil</a></li>

<li><a href="Roads_in_Canada" title="Roads in Canada">Canada</a></li>

<li><a href="Expressways_of_China" title="Expressways of China">China</a></li>

<li><a href="Highways_in_Croatia" title="Highways in Croatia">Croatia</a></li>

<li><a href="Highways_in_the_Czech_Republic" title="Highways in the Czech Republic">Czech Republic</a></li>

<li><a href="Autobahn" title="Autobahn">Germany</a></li>

<li><a href="Highways_in_Greece" title="Highways in Greece">Greece</a></li>

<li><a href="Roads_in_India" title="Roads in India">India</a></li>

<li><a href="High-quality_dual_carriageway" title="High-quality dual carriageway">Ireland</a></li>

<li><a href="Roads_in_Italy" title="Roads in Italy">Italy</a></li>

<li><a href="Roads_in_Nepal" title="Roads in Nepal">Nepal</a></li>

<li><a href="Roads_in_Pakistan" title="Roads in Pakistan">Pakistan</a></li>

<li><a href="Highways_in_Poland" title="Highways in Poland">Poland</a></li>

<li><a href="Roads_in_Portugal" title="Roads in Portugal">Portugal</a></li>

<li><a href="Highways_in_Spain" title="Highways in Spain">Spain</a></li>

<li><a href="Highway_system_in_Taiwan" title="Highway system in Taiwan">Taiwan</a></li>

<li><a href="Roads_in_the_United_Kingdom" title="Roads in the United Kingdom">United Kingdom</a></li>

<li><a href="Numbered_highways_in_the_United_States" title="Numbered highways in the United States">United States</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Main roads</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Arterial_road" title="Arterial road">Arterial road</a></li>

<li><a href="Collector_road" title="Collector road">Collector road</a></li>

<li><a href="County_highway" title="County highway">County highway</a></li>

<li><a href="Local%E2%80%93express_lanes" title="Local–express lanes">Express–collector setup</a></li>

<li><a href="Farm-to-market_road" title="Farm-to-market road">Farm-to-market road</a></li>

<li><a href="Highway" title="Highway">Highway</a></li>

<li><a href="Two-lane_expressway" title="Two-lane expressway">Two-lane expressway</a></li>

<li><a href="Parkway" title="Parkway">Parkway</a></li>

<li><a href="Trunk_road" title="Trunk road">Trunk road</a></li>

<li><a href="Highway_systems_by_country" title="Highway systems by country">Highway systems by country</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Local roads</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Alley" title="Alley">Alley</a></li>

<li><a href="Avenue_(landscape)" title="Avenue (landscape)">Avenue</a></li>

<li><a href="Bicycle_boulevard" title="Bicycle boulevard">Bicycle boulevard</a></li>

<li><a href="Boulevard" title="Boulevard">Boulevard</a></li>

<li><a href="Country_lane" title="Country lane">Country lane</a></li>

<li><a href="Driveway" title="Driveway">Driveway</a></li>

<li><a href="Frontage_road" title="Frontage road">Frontage road</a></li>

<li><a href="Green_lane_(road)" title="Green lane (road)">Green lane</a></li>

<li><a href="Main_Street" title="Main Street">Main street</a></li>

<li><a href="Primitive_road" title="Primitive road">Primitive road</a></li>

<li><a href="Single_carriageway" title="Single carriageway">Single carriageway</a></li>

<li><a href="Single-track_road" title="Single-track road">Single-track road</a></li>

<li><a href="Sunken_lane" title="Sunken lane">Sunken lane</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Other terms</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Concurrency_(road)" title="Concurrency (road)">Concurrency</a></li>

<li><a href="Detour" title="Detour">Detour</a></li>

<li><a href="Road_hierarchy" title="Road hierarchy">Road hierarchy</a></li>

<li><a href="Private_highway" title="Private highway">Private highway</a></li>

<li><a href="Route_number" title="Route number">Route number</a>

<ul><li><a href="Special_route" title="Special route">special route</a></li>

<li><a href="Business_route" title="Business route">business route</a></li></ul></li>

<li><a href="Street_hierarchy" title="Street hierarchy">Street hierarchy</a></li>

<li><a href="Stravenue" title="Stravenue">Stravenue</a></li>

<li><a href="Stroad" title="Stroad">Stroad</a></li>

<li><a href="Winter_road" title="Winter road">Winter road</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Road_junction" title="Road junction">Road junctions</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="Interchange_(road)" title="Interchange (road)">Interchanges</a><br><span class="nobold">(<a href="Grade_separation" title="Grade separation">grade-separated</a>)</span></div></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Cloverleaf_interchange" title="Cloverleaf interchange">Cloverleaf</a></li>

<li><a href="Diamond_interchange" title="Diamond interchange">Diamond</a></li>

<li><a href="Interchange_(road)#Directional_T_interchange" title="Interchange (road)">Directional T</a></li>

<li><a href="Diverging_diamond_interchange" title="Diverging diamond interchange">Diverging diamond</a></li>

<li><a href="Partial_cloverleaf_interchange" title="Partial cloverleaf interchange">Parclo</a></li>

<li><a href="Raindrop_interchange" class="mw-redirect" title="Raindrop interchange">Raindrop</a></li>

<li><a href="Roundabout_interchange" title="Roundabout interchange">Roundabout</a></li>

<li><a href="Single-point_urban_interchange" title="Single-point urban interchange">Single-point urban (SPUI)</a></li>

<li><a href="Stack_interchange" title="Stack interchange">Stack</a></li>

<li><a href="Three-level_diamond_interchange" title="Three-level diamond interchange">Three-level diamond</a></li>

<li><a href="Interchange_(road)#Trumpet_interchange" title="Interchange (road)">Trumpet</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="Intersection_(road)" title="Intersection (road)">Intersections<br><span class="nobold">(at-grade)</span></a></div></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Three-way_junction" title="Three-way junction">3-way junction</a></li>

<li><a href="Bowtie_(road)" title="Bowtie (road)">Bowtie</a></li>

<li><a href="Box_junction" title="Box junction">Box junction</a></li>

<li><a href="Channelization_(roads)" title="Channelization (roads)">Channelization</a></li>

<li><a href="Jughandle" title="Jughandle">Jughandle</a></li>

<li><a href="Michigan_left" title="Michigan left">Michigan left</a></li>

<li><a href="Offset_T-intersection" title="Offset T-intersection">Offset T-intersection</a></li>

<li><a href="Protected_intersection" title="Protected intersection">Protected intersection</a></li>

<li><a href="Quadrant_roadway_intersection" title="Quadrant roadway intersection">Quadrant roadway</a></li>

<li><a href="Right-in/right-out" title="Right-in/right-out">Right-in/right-out (RIRO)</a></li>

<li><a href="Roundabout" title="Roundabout">Roundabout</a></li>

<li><a href="Seagull_intersection" title="Seagull intersection">Seagull intersection</a></li>

<li><a href="Split_intersection" title="Split intersection">Split intersection</a></li>

<li><a href="Superstreet" title="Superstreet">Superstreet</a></li>

<li><a href="Texas_U-turn" title="Texas U-turn">Texas U-turn</a></li>

<li><a href="Turnaround_(road)" title="Turnaround (road)">Turnaround</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Road_surface" title="Road surface">Surfaces</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Asphalt_concrete" title="Asphalt concrete">Asphalt concrete</a></li>

<li><a href="Bioasphalt" title="Bioasphalt">Bioasphalt</a></li>

<li><a href="Chipseal" title="Chipseal">Chipseal</a></li>

<li><a href="Cobblestone" title="Cobblestone">Cobblestone</a></li>

<li><a href="Concrete#Roads" title="Concrete">Concrete</a>

<ul><li><a href="Reinforced_concrete" title="Reinforced concrete">Reinforced concrete</a></li></ul></li>

<li><a href="Corduroy_road" title="Corduroy road">Corduroy</a></li>

<li><a href="Crocodile_cracking" title="Crocodile cracking">Crocodile cracking</a></li>

<li><a href="Crushed_stone" title="Crushed stone">Crushed stone</a></li>

<li><a href="Diamond_grinding_of_pavement" title="Diamond grinding of pavement">Diamond grinding of pavement</a></li>

<li><a href="Full_depth_recycling" title="Full depth recycling">Full depth recycling</a></li>

<li><a href="Glassphalt" title="Glassphalt">Glassphalt</a></li>

<li><a href="Gravel_road" title="Gravel road">Gravel</a></li>

<li><a href="Macadam" title="Macadam">Macadam</a></li>

<li><a href="Pavement_milling" title="Pavement milling">Pavement milling</a></li>

<li><a href="Permeable_paving" title="Permeable paving">Permeable</a></li>

<li><a href="Plank_road" title="Plank road">Plank</a></li>

<li><a href="Plastic_road" title="Plastic road">Plastic</a></li>

<li><a href="Rubberized_asphalt" title="Rubberized asphalt">Rubberized asphalt</a></li>

<li><a href="Sealcoat" title="Sealcoat">Sealcoat</a></li>

<li><a href="Stamped_asphalt" title="Stamped asphalt">Stamped asphalt</a></li>

<li><a href="Tarmacadam" title="Tarmacadam">Tarmac</a></li>

<li><a href="Road_texture" title="Road texture">Texture</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Road_traffic_safety" class="mw-redirect" title="Road traffic safety">Road safety<br>factors</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Road and<br>environment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Aquaplaning" title="Aquaplaning">Aquaplaning</a></li>

<li><a href="Avalanche" title="Avalanche">Avalanche</a></li>

<li><a href="Black_ice" title="Black ice">Black ice</a></li>

<li><a href="Bleeding_(roads)" title="Bleeding (roads)">Bleeding</a></li>

<li><a href="Crosswind" title="Crosswind">Crosswind</a></li>

<li><a href="Dead_Man's_Curve" title="Dead Man's Curve">Dead Man's Curve</a></li>

<li><a href="Expansion_joint" title="Expansion joint">Expansion joint</a></li>

<li><a href="Hairpin_turn" title="Hairpin turn">Hairpin turn</a></li>

<li><a href="Level_crossing" title="Level crossing">Level crossing</a></li>

<li><a href="Manhole_cover" title="Manhole cover">Manhole cover</a></li>

<li><a href="Oil_spill" title="Oil spill">Oil spill</a></li>

<li><a href="Oversize_load" title="Oversize load">Oversize load</a></li>

<li><a href="Pothole" title="Pothole">Pothole</a></li>

<li><a href="Road_debris" title="Road debris">Road debris</a></li>

<li><a href="Road_slipperiness" title="Road slipperiness">Road slipperiness</a></li>

<li><a href="Road_train" title="Road train">Road train</a></li>

<li><a href="Roadkill" title="Roadkill">Roadkill</a></li>

<li><a href="Rockfall" title="Rockfall">Rockfall</a></li>

<li><a href="Snow_squall" title="Snow squall">Snow squall</a></li>

<li><a href="Speed_bump" title="Speed bump">Speed bump</a></li>

<li><a href="Storm_drain" title="Storm drain">Storm drain</a></li>

<li><a href="Traffic_light" title="Traffic light">Traffic light</a></li>

<li><a href="Traffic_sign" title="Traffic sign">Traffic sign</a></li>

<li><a href="Washboarding" title="Washboarding">Washboarding</a></li>

<li><a href="Washout_(erosion)" title="Washout (erosion)">Washout</a></li>

<li><a href="Whiteout_(weather)" title="Whiteout (weather)">Whiteout</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Traffic_psychology" title="Traffic psychology">Human factors</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Driver's_education" title="Driver's education">Driver's education</a></li>

<li><a href="Driving_under_the_influence" title="Driving under the influence">Driving under the influence</a></li>

<li><a href="Drowsy_driving" title="Drowsy driving">Drowsy driving</a></li>

<li><a href="Single-vehicle_crash" class="mw-redirect" title="Single-vehicle crash">Single-vehicle crash</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Vehicles</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Airbag" title="Airbag">Airbag</a></li>

<li><a href="Automotive_safety" title="Automotive safety">Automotive safety</a></li>

<li><a href="Crumple_zone" title="Crumple zone">Crumple zone</a></li>

<li><a href="Risk_compensation#Road_transport" title="Risk compensation">Risk compensation (road transport)</a></li>

<li><a href="Underride_guard" class="mw-redirect" title="Underride guard">Underride guard</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%"><a href="Traffic#Rules_of_the_road" title="Traffic">Space and<br>time allocation</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Barrier_transfer_machine" title="Barrier transfer machine">Barrier transfer machine</a></li>

<li><a href="Climbing_lane" title="Climbing lane">Climbing lane</a></li>

<li><a href="Complete_streets" title="Complete streets">Complete streets</a></li>

<li><a href="Contraflow_lane" title="Contraflow lane">Contraflow lane</a></li>

<li><a href="Contraflow_lane_reversal" title="Contraflow lane reversal">Contraflow lane reversal</a></li>

<li><a href="High-occupancy_toll_lane" title="High-occupancy toll lane">High-occupancy toll lane</a></li>

<li><a href="High-occupancy_vehicle_lane" title="High-occupancy vehicle lane">High-occupancy vehicle lane</a></li>

<li><a href="Living_street" title="Living street">Living street</a></li>

<li><a href="Managed_lane" title="Managed lane">Managed lane</a></li>

<li><a href="Median_strip" title="Median strip">Median / Central reservation</a></li>

<li><a href="Motorcycle_lane" title="Motorcycle lane">Motorcycle lane</a></li>

<li><a href="Passing_lane" title="Passing lane">Passing lane</a></li>

<li><a href="Pedestrian_crossing" title="Pedestrian crossing">Pedestrian crossing</a></li>

<li><a href="Pedestrian_zone" title="Pedestrian zone">Pedestrian zone</a></li>

<li><a href="Refuge_island" title="Refuge island">Refuge island</a></li>

<li><a href="Reversible_lane" title="Reversible lane">Reversible lane</a></li>

<li><a href="Road_verge" title="Road verge">Road verge</a></li>

<li><a href="Runaway_truck_ramp" title="Runaway truck ramp">Runaway truck ramp</a></li>

<li><a href="Shared_space" title="Shared space">Shared space</a></li>

<li><a href="Sidewalk" title="Sidewalk">Sidewalk / Pavement</a></li>

<li><a href="Shoulder_(road)" title="Shoulder (road)">Shoulder</a></li>

<li><a href="Street_running_train" title="Street running train">Street-running railway</a></li>

<li><a href="Traffic_calming" title="Traffic calming">Traffic calming</a></li>

<li><a href="Left-_and_right-hand_traffic" title="Left- and right-hand traffic">Traffic directionality</a></li>

<li><a href="Traffic_island" title="Traffic island">Traffic island</a></li>

<li><a href="Traffic_lanes" class="mw-redirect" title="Traffic lanes">Traffic lanes</a></li>

<li><a href="Traffic_signal_preemption" title="Traffic signal preemption">Traffic signal preemption</a></li>

<li><a href="Truck_bypass" title="Truck bypass">Truck bypass</a></li>

<li><a href="Unused_highway" title="Unused highway">Unused highway</a></li>

<li><a href="Wide_outside_lane" title="Wide outside lane">Wide outside lane</a></li>

<li><a href="Woonerf" title="Woonerf">Woonerf</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Demarcation</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Bollard_(traffic)" class="mw-redirect" title="Bollard (traffic)">Bollard</a></li>

<li><a href="Botts'_dots" title="Botts' dots">Botts' dots</a></li>

<li><a href="Cable_barrier" title="Cable barrier">Cable barrier</a></li>

<li><a href="Concrete_step_barrier" title="Concrete step barrier">Concrete step barrier</a></li>

<li><a href="Constant-slope_barrier" title="Constant-slope barrier">Constant-slope barrier</a></li>

<li><a href="F-shape_barrier" title="F-shape barrier">F-shape barrier</a></li>

<li><a href="Guard_rail" title="Guard rail">Guard rail</a></li>

<li><a href="Jersey_barrier" title="Jersey barrier">Jersey barrier</a></li>

<li><a href="Kassel_kerb" title="Kassel kerb">Kassel kerb</a></li>

<li><a href="Noise_barrier" title="Noise barrier">Noise barrier</a></li>

<li><a href="Raised_pavement_marker" title="Raised pavement marker">Raised pavement marker</a></li>

<li><a href="Road_surface_marking" title="Road surface marking">Road surface marking</a></li>

<li><a href="Rumble_strip" title="Rumble strip">Rumble strip</a></li>

<li><a href="Traffic_barrier" title="Traffic barrier">Traffic barrier</a></li>

<li><a href="Traffic_cone" title="Traffic cone">Traffic cone</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Structures</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Causeway" title="Causeway">Causeway</a></li>

<li><a href="Overpass" title="Overpass">Overpass / Flyover</a></li>

<li><a href="Tunnel" title="Tunnel">Underpass / Tunnel</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="background:#CEDFF2;width:1%">Performance<br>indicators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Pavement_condition_index" title="Pavement condition index">Pavement condition index</a></li>

<li><a href="International_roughness_index" title="International roughness index">International roughness index</a></li>

<li><a href="Present_serviceability_index" title="Present serviceability index">Present serviceability index</a></li>

<li><a href="Pavement_performance_modeling" title="Pavement performance modeling">Pavement performance modeling</a></li>

<li><a href="Granular_base_equivalency" title="Granular base equivalency">Granular base equivalency</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="background:#CEDFF2"><div>

<ul><li><a href="Glossary_of_road_transport_terms" title="Glossary of road transport terms">Glossary of road transport terms</a></li>

<li><a href="List_of_road_types_by_features" class="mw-redirect" title="List of road types by features">Road types by features</a></li>

<li>Template:Traffic signs</li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2025-07-20" href="https://en.wikipedia.org/wiki/?title=Continuous-flow_intersection&oldid=1301614088">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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