You Are Driving on a Road With Reversible Lanes

You Are Driving on a Road With Reversible Lanes.

Lane in which traffic may travel in either direction

reversible lane
(British English language:
tidal menses) is a lane in which traffic may travel in either management, depending on sure conditions. Typically, it is meant to amend traffic flow during rush hours, by having overhead traffic lights and lighted street signs notify drivers which lanes are open or closed to driving or turning.

Reversible lanes are also commonly institute in tunnels and on bridges, and on the surrounding roadways – even where the lanes are non regularly reversed to handle normal changes in traffic flow. The presence of lane controls allows authorities to shut or reverse lanes when unusual circumstances (such as structure or a traffic mishap) require use of fewer or more lanes to maintain orderly flow of traffic.

Separation of flows


Some more recent implementations of reversible lanes use a movable barrier to establish a physical separation between immune and disallowed lanes of travel. In some systems, a concrete bulwark is moved during low-traffic periods to switch a central lane from one side of the road to another; some examples are the 5-lane San Diego-Coronado Bay Span in San Diego, California, the vii-lane Alex Fraser Span on the Fraser River in Vancouver and the eight-lane Auckland Harbour Bridge across the Waitemata Harbour in Auckland, New Zealand. Other systems employ retractable cones or bollards which are built into the road, or retractable fences which tin can divert traffic from a reversible ramp. The 2 middle lanes of the six-lane Gilt Gate Span are reversible; they are southbound during morning blitz hour and northbound at evening rush 60 minutes. Prior to the installation of a movable median barrier in January 2015, they were demarcated past vertical yellowish markers placed manually in sockets in the roadway.

Many urban freeways take entirely separate carriageways (and connecting ramps) to hold reversible lanes (the reversible lanes in such a configuration are oft referred to equally “express lanes”). Generally, traffic flows in one direction or another in such a configuration (or non at all); the carriageways are not “split up” into 2-lane roadways during non-rush periods.[1]
Typically, this sort of limited lane will accept fewer interchanges than the primary lanes, and many such roadways only provide onramps for inbound traffic, and offramps for outbound traffic.

Passing lanes


Historically, the term “suicide lane” has also referred to a lane in the center of a highway meant for passing in both directions.[2]
Neither management has the right-of-way, and both directions are permitted to use the lane for passing. In a similar layout, iii lanes are striped with two in one direction and one in the other, but traffic in the direction with i lane is immune to cross the centerline to laissez passer.

two+one roads accept replaced some of these, mainly in Europe.

Turn lanes and flush medians


A turn lane (in New Zealand a “flush median”) with a raised median in the forefront

A typical five-lane arterial equipped with a center turn lane. These are often found in cities, towns and developed areas nigh cities. In the United States, the sequence line is located on the inside of the lane (sometimes with left turn arrows for both flows[3]). In Canada it is the same for all provinces with the exception of Ontario, where the sequence line is located on the outside.

Some other blazon of center two-fashion lane is a “two-way left plough lane” (TWLT) or “center left-plough lane”, or (for countries that bulldoze on the right) “eye turn lane” or “median turn lane”, a single lane in the center of the road into which traffic from both directions pulls to make a left plough. This lane is also sometimes called a “suicide lane” for their notorious fatality rates, particularly in the U.s.a. in settings with high traffic speeds (45 mph), and on roads with five or more lanes (typically two or three lanes in each travel direction with one eye turn lane).[iv]
Notwithstanding, some studies have establish that converting loftier-speed 4 lane streets into three lane streets (one lane of traffic in each management with a centre plow lane) and lowering speed limits can result in improved safe, despite the apply of a middle plow lane, every bit traffic collisions occur at far lower speeds.[5]

These roads are very common in suburban areas and less common in rural areas, though they are frequent around developed areas near Interstate Highway bypasses in the The states. Many were divided highways before the median was demolished or otherwise replaced by the plow lane. Many four-lane streets with a center double xanthous line are being phased out in favor of 3- or five-lane streets with center turn lanes because the center lane allows for less disruption of traffic menses.[6]
For routes with moderate traffic, other movements involve downgrading four-lane undivided streets to iii-lane streets with a turn-merely heart lane.

This center lane tin be used by emergency vehicles like police force cars, ambulance, and burn down trucks to avoid traffic traveling in either direction. Drivers are non allowed to utilize the center lane of such a highway for passing slow-moving vehicles, except when funding or space constraints dictate use of information technology every bit a rush hour “travel lane” when traffic is largely asymmetric between a central business district and its suburbs. U.S. Route 13 most the Greenville, Due north Carolina, city limits is a rare case of a posted warning sign that states “do not pass in heart lane”.



No (or minimal) lane controls


  • Connecticut Avenue in Washington, D.C.[7]
  • Chain Span in Washington, D.C.[7]

Lane controls and no (or minimal) physical separation




  • Peace Bridge between the U.S. and Canada, connecting Fort Erie, Ontario to Buffalo, New York. Three lanes full, all marked reversible, one reversed in the direction of rush hour flow with the possibility of all lanes flowing in the same direction based on traffic needs.
  • Lewiston-Queenston Bridge connecting Niagara-on-the-Lake, Ontario to Lewiston, New York. 5 lanes total, all marked as reversible, one to four lanes marked daily in the aforementioned direction, depending on traffic needs. In addition to the directional signals, special signals are also fitted to specify what type of vehicle may use the lane.

Commonwealth of australia


  • Sydney Harbour Bridge, (viii lanes full, three (formerly four) potentially reversible, three reversed daily. Morning peak, five s, three due north. Afternoon peak, 3 southward, v north. Other times, four south, four north).
  • Spit Bridge, (4 lanes total. Morning peak iii south, 1 north. Afternoon acme iii north, 1 south. All other times 2 north, 2 south).
  • General Holmes Drive generally has four north and four s lanes, just during morn peak hour one southbound lane is divided from the others with a plastic isle with signs placed forth the superlative. The island is shifted across with a specialized vehicle. This lane is used as a northbound lane for local traffic to get to Botany and Mascot from the St George surface area.
  • Victoria Road, between the suburbs of Drummoyne and Rozelle – enables a tidal flow arrangement that provides four city bound lanes (including a defended bus lane) and two west spring lanes in the forenoon height, before reverting to 3 lanes in each management at 10am.[8]
    A barrier transfer machine is used to movement the concrete bulwark.[ix]
  • Flagstaff Road, Adelaide. Three lanes total, with the centre lane reversible. During the morning superlative, northbound (downhill) occupies two lanes, and southbound (uphill) ane lane. For the remainder of the time (early morning until the side by side morning’s peak), the uphill southbound management is given dominance.
  • Johnston Street, Melbourne. Five lanes full, with the centre lane reversible.
  • Queen’due south Road, Melbourne. Five lanes full, with the middle lane reversible.
  • Tasman Bridge, Hobart. Five lanes total, with center lane reversible. Morning peak, three west, 2 e. Other times, two west, three e.



  • East BroadWay betwixt Front Street and Crow Lane, main routes in to Hamilton (three lanes total, one reversible).



  • Avenida Radial Leste in São Paulo has about x lanes total (five in each management) in near sections (just information technology varies slightly in others), and on weekdays information technology has i lane (sometimes 2 lanes, depending on traffic conditions) reversed during the rush hour (in the morning and in the evening) to reduce traffic congestion. In the morn, the eastbound lanes are reversed to the w (downtown), and in the evening, the westbound lanes are reversed to the east (suburb).



  • Lions’ Gate Bridge in Vancouver (3 lanes total, 1 reversible)
  • Angus 50. Macdonald Bridge, Chebucto Road and the Herring Cove Road in Halifax (iii lanes total, ane reversible)
  • Jarvis Street in downtown Toronto (5 lanes total, eye lane reversed daily for AM/PM rush hours)
  • Champlain Bridge in Ottawa (iii lanes total; ane reversible)
  • Sherman Admission and Sherman Cut in Hamilton, Ontario (2 lanes, both reversible)
  • George Massey Tunnel in Delta and Richmond, B.C. (4 lanes total, ii reversible, with access controlled by gates)
  • Connors Road in Edmonton (iii lanes, one reversible)
  • McDougall Hill in Edmonton
  • 127th Street from 132 Avenue to Yellowhead Trail
  • 97th Street from 118th Artery to 127th Avenue in Edmonton (7 lanes full, three reversible)
  • Heart Street from 20th Avenue N to 6th Avenue South in Calgary (4 lanes total, 2 reversible; standard configuration is 2 out, 2 in; morning time blitz is ane out, three in; and evening rush is 3 out, 1 in)
  • 10th Street NW / 9th Street SW from 5th Artery NW to 4th Avenue SW in Calgary (iv lanes total, 2 reversible; standard configuration is 2 out, two in; morning rush is ane out, iii in; and evening rush is iii out, 1 in)
  • Park Avenue in Montreal, five lanes full, centremost lane is reversible, sidemost lanes are reserved for public ship during rush hr; morning rush is ii in, one out (not including omnibus lanes), evening blitz is reversed
  • Quebec Bridge in Quebec City, three lanes total with the median lane reversed for traffic heading into the city in the morning time and leaving the urban center in the afternoon
  • Champlain Bridge in Montreal, rush hour bus lanes
  • Jacques Cartier Bridge in Montreal, v lanes total, two for both directions, one blitz hr primal reversible lane
  • Victoria Span in Montreal, 2 lane, 1 in each direction. Both lanes are inbound from 6am to 9am, and outbound from 3pm to 7.15pm.
  • During the 2010 Winter Olympics, British Columbia Highway 99 was subject to lane control in three-lane sections of the highway, via signs on the side of the route that were changed manually.[
    commendation needed
  • Old Pitt River Bridge in Port Coquitlam and Pitt Meadows, (4 lanes total with 2 reversible lanes accessed by gates.)
  • Alex Fraser Span in Greater Vancouver, (7 lanes total, 1 reversible with movable barrier)[ten]
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  • State Route 102 about Kraljevica leading southbound to the Krk Bridge used to have a iii-lane passing lane combination, bullheaded curves, and a steep grade. It was later changed to a passing lane combination that makes the northbound traffic dominant.



  • Heerstraße, Berlin, 5 lanes in total
  • Connection road between Europa Park, Rust, and highway A5, 3 lanes in total.

New Zealand


  • Panmure Bridge in Auckland (3 lanes full)
  • Whangaparaoa Road; between Hibiscus Declension Highway and Red Beach Route in Auckland (3 lanes total)[11]
  • Redoubt Road; between Auckland Southern Motorway off-ramp and Hollyford Drive in Auckland (iii lanes total)[12]



  • Reversible lanes are oftentimes used in hilly sections of highways with heavy truck traffic. Most of them were built during the 1980s and 1990s.

United Kingdom


  • A12/A47 road in Lowestoft on the approaches to the Bascule Bridge. As 4 lanes merge into three on the approaches to the bridge for both sides, the heart lane is open northbound in the forenoon until 11:30AM and open southbound afterward 11:30AM. All lanes are closed temporarily when the span is raised by fashion of reddish X’southward and orange flashing lights.
  • A38 road across the Tamar Bridge and through the Saltash Tunnel in Saltash. The middle lane is reversible, allowing for control of traffic flows in vacation periods and during blitz 60 minutes.
  • A470 North Road in Cardiff, A section of effectually 1 mile long between the Maindy Route Junction and College Avenue where the road drops from a dual two-lane to a iii-lane section. One lane is always dedicated to Northbound (out of town) traffic, and one lane to Southbound (city heart bound traffic) with the centre lane reversing depending on the fourth dimension of twenty-four hour period – i.east. in the morning time 2 lanes into the city, i lane out, in the evening ii lanes out of the metropolis, 1 lane in.
  • A1434 in Lincoln (Canwick Road) has a short 3-lane section of tidal flow.
  • A38(Thou) Aston Thruway in Birmingham has 7 lanes, 3 of which are flexible co-ordinate to rush hr traffic flow direction/fourth dimension of day.

United States



  • In Montgomery, Norman Span Route through the Garden District and Old Cloverdale has a centre lane with reversible markings and traffic menstruum lights between Burton Avenue and Legrand Identify.


  • The Anton Anderson Memorial Tunnel betwixt Portage and Whittier is a 13,300 anxiety (4,050 g) long, reversible single lane tunnel, shared between vehicular traffic and trains. The direction of traffic alternates every xv minutes, with periods allowed for train traffic each twenty-four hours.


  • In Phoenix on 7th Avenue between McDowell Road and Northern Avenue, and 7th Street between McDowell Road and Cave Creek Road/Dunlap Avenue. On both roads, the lane configuration is 2 southbound and iii northbound, with the center lane open for southbound traffic between 6-9am and open up to northbound traffic between four-6pm. Left turns are prohibited from the reversible lane at most arterial and collector street intersections during these hours but all the same allowed at driveways and non-signaled street intersections.[thirteen]


  • Lafayette Street in Santa Clara – the center lane is used for northbound traffic on weekday mornings, southbound traffic for weekday afternoons, and as a eye turning lane at other times.
  • Gilded Gate Bridge in San Francisco and Marin County – (half dozen lanes total, 2 reversible with moveable barriers)
  • quaternary Street Bridge in Los Angeles – the eye lane is used for westbound traffic on weekday mornings, eastbound traffic for weekday afternoons, and every bit a centre turning lane at other times.
  • The San Diego-Coronado Bay Bridge (a portion of California Land Road 75) – five lanes with movable center wall; is alternately configured as three/2 or 2/3 dependent on time of twenty-four hour period (westbound mornings, eastbound afternoons)
  • Interstate xv “Express Lanes” in San Diego County between SR 52 and SR 78 – four lanes with movable center wall; normally configured as 2/2 but tin can be shifted to 3/1 or 1/3 if needed

District of Columbia

  • Rock Creek Parkway operates equally a 1-way route on weekday mornings and afternoons.[14]
  • Clara Barton Parkway operates equally a 1-way road between the MacArthur Boulevard Exit and Chain Span on weekday mornings and afternoons[16]
  • Independence Avenue has a reversible centre lane on weekday mornings and afternoons between 3rd St. SW and 2nd St. SE.[xv]


  • Bay Street in Jacksonville
  • NW 199th St in Miami betwixt NW 27th Ave. and NW 2nd Ave. there are two lanes always dedicated to Eastbound and Westbound, due west of Florida’s Turnpike there are two reversible lanes, and w of the turnpike, there is one reversible lane.
  • The replacement of the Toms Bayou Bridge in Valparaiso utilized reversible lanes during construction in 2018.[17]


  • South Atlanta Street in Roswell, Georgia, equally part of Georgia State Route 9 is iii lanes between with overhead lane-use control signals Marrietta Highway (SR 120) and the Chattahoochee River.
  • Dekalb Ave NE/Decatur St NE in Atlanta, alongside the blue and greenish Metropolitan Atlanta Rapid Transit Authority line: the center lane of three is reversed using overhead lane-use control signals according to rush hour traffic.
  • Northside Drive in Atlanta: the center lane of iii is reversed using overhead lane-use control signals.
  • Vineville Avenue in Macon: the center lane of 3 is reversed using overhead lane-use control signals.


  • In Indianapolis, Fall Creek Parkway North Bulldoze betwixt Central Avenue and Evanston Avenue has 5 lanes (seven in some sections) with i lane marked as reversible. Configuration is typically designed to allow for 3 in, 2 out during morning blitz hours, and 2 in, three out during afternoon rush hours. Due to Fall Creek Parkway’due south proximity to the Indiana State Fairgrounds,[18]
    lane configurations alter periodically to facilitate traffic flow during events at the fairgrounds.


  • Clay Wade Bailey Bridge in Covington (3 lanes total, 1 reversible)
  • Nicholasville Road (U.South. Highway 27) in Lexington has reversible lanes (lane signals, no physical separation) starting at its intersection with Conn Terrace at the University of Kentucky campus and catastrophe at New Circumvolve Road, the urban center’s inner beltway. During morning rush hour, equally well as the hours earlier UK football dwelling house games, southbound traffic (away from the United kingdom of great britain and northern ireland campus and downtown) is restricted to 1 lane betwixt campus and Southland Bulldoze, and two lanes from Southland to New Circle. Northbound traffic faces the aforementioned restrictions in the evening rush hr and immediately after football games. During off-elevation hours, an equal number of lanes are dedicated to traffic in each direction. One dedicated left-turn lane is always provided regardless of the current traffic configuration.
  • Baxter Avenue and Bardstown Road (U.S. Highway 31E) in Louisville have reversible lanes (lane signals without any physical separation) for

    miles through The Highlands, starting at their intersection with Lexington Road in the north and ending at Douglass Boulevard in the southward. This stretch of road has four lanes, simply on-street parking oftentimes restricts traffic to ane lane in each direction outside of rush hours. During rush hours, parking is prohibited n of Douglass Boulevard. Southbound traffic leaving downtown Louisville is restricted to i lane during the morning time blitz hour, with northbound traffic having the same brake during the evening rush hour. Also, the lane immediately to the left of blitz-hour through traffic becomes a dedicated left-turn lane. Electronic signs over the roadway warning motorists to the traffic menses dedication of each lane. According to a 2017 traffic study, this is the but road in the Usa that has
    lane lights and on-street parking.[19]
    In 2018, a proposed chosen for ending this traffic arrangement.[xx]


  • Chesapeake Bay Span near Annapolis (5 lanes total, all marked reversible, one ordinarily reversed for normal tiptop traffic). However, due to its dual spans, when at that place are 2 eastbound lanes and 3 westbound the opposing sides are completely divided, this is the usual configuration.
  • Hanover Street Bridge in Baltimore has five lanes total marked reversible, with ane usually reversed for normal peak traffic).
  • Georgia Avenue in Argent Bound has vii lanes. During most hours, the heart lane is marked with a xanthous lit
    equally a left turn lane for both directions. During morning and evening rush hours, the lane is marked with a downwards facing green pointer – southbound in the morning, northbound in the evening – or a red
    – northbound in the morn, southbound in the evening – and left turns are prohibited.
  • Colesville Road in Silver Spring has 6 lanes. During off-blitz hours, three lanes go in each direction. During morning blitz hours, 4 lanes (marked with greenish arrows) go southbound, while northbound (marked with Xs in those lanes) is relegated to two lanes. During afternoon rush, the procedure is reversed.
  • Clara Barton Parkway operates as a one-mode route between the MacArthur Boulevard Exit and Chain Span on weekday mornings and afternoons[16]
  • Gay Street in Baltimore between North Avenue and Preston Street has iii lanes. The middle lane is reversible with northbound/outbound traffic using the lane in the afternoon and southbound/inbound traffic using the lane in the morning time.
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  • Mackinac Span near St Ignace treats the passing lane of the southbound side as a temporary northbound lane during the Labor Day span walk, at which time the northbound side is used for pedestrians.
  • Like 7th Street and seventh Avenue in Phoenix, at one time Michigan Artery in Dearborn had a reversible lane between Telegraph Route and the Southfield State highway which was marked with lane signals. These accept since been removed.


  • Dodge Street (U.S. Route vi) between Turner Boulevard and 68th Street in Omaha: no physical separation; lanes marked with overhead lane-use control signals. Center lane management is eastbound from v:50am–ix:00am and westbound from nine:00am–5:50am.
  • Farnam Street between Saddle Creek Road and 57th Street in Omaha: no concrete separation; lanes marked with lane-use control signals and LED signs. On weekdays the direction is one-way eastbound 7am-9am, and i-fashion westbound 4pm-6pm.

New Bailiwick of jersey

  • Lincoln Tunnel’s center tube (ane of three in total) is reversible. In general, both of the lanes, including i “XBL” (Exclusive Bus Lane), serve Manhattan-bound traffic during the weekday morning rush hr, both of the lanes serve New Jersey-leap traffic during the weekday evening rush hour, and one lane is provided in each direction during other time periods.
  • Since 1970, the Lincoln Tunnel Approach and Helix in Hudson Canton supports an “XBL”, or
    Exclusive Bus Lane,
    on New Bailiwick of jersey Road 495 during the weekday morning peak period (approximately 6:00 a.yard. – 10:00 a.m.).[21]
    Eastbound buses travel in this reversible lane to the arroyo to the toll plaza at the Lincoln Tunnel, at the other terminate of which is the Port Authority Bus Terminal in Midtown Manhattan in New York Urban center. The lane is fed by the New Jersey Turnpike at Exits 16E and 17, and the western terminus of New Bailiwick of jersey Route three. Both the tunnel and terminal are owned and operated by the Port Authority of New York and New Bailiwick of jersey, the bi-state bureau that also operates the two.5-mile (4.02 km) reversible, express bus lane along the left lane of three westbound lanes. The XBL serves over i,800 buses, which transport more 65,000 persons, each morning time and is a major component of the morning “entering” exchange crossing the Hudson River.[21]
    Over 100 double-decker carriers apply the Exclusive Coach Lane.[21]
    New Jersey Transit operates numerous interstate bus routes through the Lincoln Tunnel, as practice numerous regional and long-distance companies.
  • Walt Whitman Bridge, Ben Franklin Bridge and Commodore Barry Bridge over the Delaware River between New Bailiwick of jersey and Pennsylvania use moveable medians, to create zipper lanes.[26]

New York

  • Delancey Street in Manhattan has two lanes on the eastbound side adjacent to the median used for westbound traffic in the morning rush hour between the Williamsburg Span and Allen Street. All traffic in these lanes must proceed to and and so turn left onto Allen, during these times left turns are prohibited from the regular westbound roadway onto Allen Street.
  • Manhattan Bridge in New York City has three lanes on the lower level, which can have all lanes used in ane direction or reversible with two lanes one way and the other for the opposite direction.
  • Upper level of the Queensboro Bridge in New York Urban center has four lanes and can accept all flowing outbound (PM peak), or ii lanes each direction in normal configuration.
  • Mid-Hudson Bridge in Poughkeepsie, New York, has a reversible center lane used during rush hour.

Due north Carolina

  • Eastward 7th Street in Charlotte
  • U.Southward. Route 29 in Charlotte
    • This road is the access road to Charlotte Motor Speedway from the city, and links to Interstate 485. It is used for any events at the speedway.


  • Butler Street in Sandusky, used to route traffic between U.S. Route 250 and Cleveland Road, features a reversible heart lane to facilitate influxes of traffic going to and from Cedar Signal.[27]


  • Freedom Bridge near the southern terminus of I-579 in Pittsburgh has 4 lanes, all of which are potentially reversible, and 2 of which are reversed based on blitz-60 minutes times.
  • Westward Finish Span in Pittsburgh has 4 lanes, which are all potentially reversible.
  • West General Robinson Street near Heinz Field in Pittsburgh has 4 lanes, and two are reversible.

South Carolina

  • The Silas Due north. Pearman Bridge, demolished in 2005, originally contained a 3rd reversible lane, leftmost when heading north on United states of america 17. This was converted to a fixed truck lane for southbound traffic shortly after its construction in the 1960s, as an inspection of its companion span, the John P. Grace Memorial Span, revealed information technology was no longer strong enough to conduct truck traffic. Both bridges would eventually be rendered obsolete and replaced by the Ravenel Bridge.


  • U.South. Route 70 in Nashville has three reversible lanes (lane signals, Traffic Lights, without any physical separation) from Korean Veterans Boulevard to just east of a railroad crossing, in that location is a break in the reversible lanes between Willow Street and Lindsley Avenue.
  • Victory Memorial Bridge in Nashville has 5 lanes, with but the center lane begin a reversible lanes (lane signals without any physical separation).


  • West Alabama Street and N Main Street in Houston – both are iii-lane streets, which operate in a 2 in, 1 out configuration during the morning rush, a i in, 2 out configuration during the evening blitz, and a i each way + two-fashion left turn lane at other times.
  • Northward Collins Street from Cowboys Way to East Division Street, and Due east Division Street from North Collins Street to Vi Flags Drive, merely east of SR 360 are reversible to requite access to Cowboys Stadium in Arlington


  • 5400 Southward (Land Route 173) in Salt Lake County between 1900 W and Bangerter Highway has seven lanes, three of which are reversible and include a heart turning lane at all times.


  • Washington Boulevard (State Road 237) in Arlington County between 13th Street and Wilson Boulevard – this 1-block section has only 3 lanes with the centre lane reversible past overhead light up indicators.
  • River Road in Newport News between 75th Street and Shipyard Drive. This is the truck road for Newport News Shipbuilding.

Lane controls and concrete separation


  • The Lee Roy Selmon Superhighway in Tampa, Florida, Us includes a 3-lane elevated reversible express lane (REL) system. The REL is located in the center of directional local lanes, routinely existence elevated over the local lanes in constrained corridor sections. The reversible express lanes utilise barrier gate arms to control the management of travel and travel direction is reversed daily with superlative traffic patterns.
  • The A38(G) freeway (likewise known as the Aston Expressway) in Birmingham, England. The road connects the city centre with Spaghetti Junction on the M6. Information technology is a two-mile, seven-lane department of motorway with no fundamental reservation, and a lower than usual speed limit of fifty mph. Synthetic in 1971, it was the Great britain’southward first contraflow road. Overhead lane control signals permit for four lanes in and 2 out in the morning rush hour, reversed in the evening, and 3 lanes each way at all other times. One dividing lane is airtight to traffic at all times, and motorcycles are permanently prohibited from using the central, cherry-red-surfaced lane (with a stock-still sign) owing to its apply as an off-camber drain. The lane control signals tin can be set to allow travel in either direction for any lane in infrequent circumstances, which has been used for single-lane, reduced-speed running in each direction (or 2+1 with no divider) during road piece of work, assuasive the freeway to remain largely open even during major repairs. However, the 7-lane section splits at both ends to fully divided sets of 4×2 lane slip roads, with the key cerise lane catastrophe in a barrier, so total utilize of this flexibility is uncommon and occasional overnight closure is required.
  • U.Due south. Route 78 in Snellville, Georgia, United States, has 6 lanes in full. This occurs from the express access portion through Stone Mountain Park to Georgia State Route 124 (Scenic Highway) for several miles. The center ii lanes were reversible (usually occurring during rush hr) with a varying lane ever reserved as a center plough lane; hence 3 lanes were used for 1 management of travel and ii for the other. However, due to rising traffic volumes during superlative hours that made traffic flows equivalent, the reversible lane system was removed in 2009.[28]
  • The Caldecott Tunnel between Oakland, California and Contra Costa County, previously had three separate bores, with the eye bore switching direction twice daily for rush hour traffic. A fourth tunnel bore opened in November 2013 to westbound traffic.[29]
    Two bores are now permanently used by westbound traffic, and the other ii by eastbound traffic, with no reversible lanes.
  • The Elbe Tunnel about Hamburg, Germany, is function of the Bundesautobahn A7 and has 4 split bores, of which ii tin be switched to allow travel either in each direction or unidirectionally.

Lane controls and physical separation by movable barrier


  • Benjamin Franklin Bridge, Walt Whitman Bridge, and Commodore Barry Bridge in Philadelphia
  • Tappan Zee Span (1955) in New York
  • Theodore Roosevelt Bridge in Washington, D.C.[7]
  • Auckland Harbour Span in Auckland, New Zealand
  • San Diego-Coronado Bay Bridge in San Diego, California (function of California Road 75)
  • Southeast Expressway in and near Boston, Massachusetts
  • A reversible lane, likewise called a zipper lane, is in utilize on eastbound Interstate H-1 for traffic heading from Leeward Oahu to Pearl Harbor. It is open from five:xxx to 9:00 a.thou.[thirty]
  • The Golden Gate Span (vi lanes total, 2 reversible), connecting San Francisco with suburban Marin County. Prior to 2015, opposing traffic lanes were separated only by plastic pylons, which were moved several times daily by hand and provided minimal physical separation. Installation of a movable median barrier was completed on January 11, 2015.[31]
  • Alex Fraser Bridge in Vancouver, British Columbia (7 lanes total, 1 reversible)
  • Verrazzano-Narrows Bridge in New York City (vii lanes total, 1 reversible)
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Third (reversible) carriageways on freeways


  • Bundesautobahn seven, New Elbe Tunnel, Hamburg, Deutschland (actually two reversible carriageways, plus two stock-still)
  • Warringah Throughway in Sydney, Australia
  • Interstate v in Seattle, Washington
  • Interstate 15 in northern San Diego, California
  • Interstate 25 and United states of america-36 in Denver, Colorado
  • Interstate 394 through Minneapolis, Minnesota and its western suburbs
  • Interstate 90/Interstate 94 (segment of the Kennedy Superhighway) in Chicago, Illinois
  • Interstate 75 and Interstate 575 north of Atlanta, Georgia, and Interstate 75 south of Atlanta
  • Interstate 279 in Pittsburgh, Pennsylvania (centre carriageway reserved for HOV traffic during rush hr)
  • Lee Roy Selmon Motorway from Brandon to Tampa, Florida
  • Interstate 64 in Norfolk, Virginia (centre carriageway reserved for HOV traffic during blitz 60 minutes)
  • Interstate 395 and Interstate 95 through Washington, D.C. and its Virginia suburbs (centre carriageway reserved for HOV traffic during rush hr)
  • Lincoln Tunnel between Weehawken, New Jersey and the New York City borough of Manhattan has 3 tubes with two lanes each. The center tube carries 2 lanes in elevation direction weekdays (with a reserved entering autobus lane during the AM blitz menstruum) and a unmarried lane each management off-top (nights, weekends, holidays).
  • Multiple freeways in Houston have reversible centre HOV lanes operated by Houston METRO.
  • A1 motorway between the interchanges of A9 and A6, Amsterdam, Netherlands. A 2 lane wagon is opened in the peak direction during rush hours.
  • A10 motorway, Second Coen Tunnel, Amsterdam, Netherlands. Ane of the tubes is opened in the summit direction during blitz hours.

Entire roadway routinely reversed


  • The Anchieta/Imigrantes highway organisation in Brazil contains the world’s longest fully reversible road (The Imigrantes variant at a length of 58.v km). Information technology comprises a total of 10 lanes distributed over iv separate roadways (3+3+2+2), each of which tin can exist reversed. Traffic menses is unidirectional on upwardly to three roadways at a fourth dimension, in different combinations, depending on need. Since this highway organisation is the just quick route from São Paulo to the beach, the majority of the traffic on Fridays and Sundays are cars on weekend trips, creating highly asymmetrical demand.
  • In Washington, D.C., the Rock Creek and Potomac Parkway betwixt the Lincoln Memorial and Calvert St. is converted from ii lanes in each direction to one-way southbound in the morning and 1-way northbound in the evening rush hour Monday through Friday, excluding federal holidays. The P Street exit, unremarkably unavailable northbound, is an allowed left go out in the evening. South of Virginia Avenue, two lanes are closed during rush hours to facilitate the merge to or from Virginia Avenue. At that place are no overhead markings, only police barricades block wrong-way entrances to the roadway.[seven]
  • Canal Road in Washington, D.C. (between Foxhall Road and Arizona Avenue)[7]
  • Sherman Admission in Hamilton, Ontario. ii lanes total, both marked as reversible, with both lanes flowing in the same direction during rush hr each weekday.
  • Assembly Street and Bluff Road (both part of Southward Carolina 48), along with Shop Road and George Rogers Boulevard in Columbia, Southward Carolina, are 1-style during University of South Carolina football games at Williams-Brice Stadium.
  • The lower deck of the Centre Street Bridge in Calgary, Alberta, is fully reversible. It commonly allows for two-way traffic, but both lanes flow in the same direction during rush hour each day.
  • Victoria Span, in Montreal, Quebec, normally allows for two-way traffic. Simply during rush hours, it just allows one-way traffic, northbound in the morning, and southbound in the afternoon.
  • Farnam Street in Omaha is a normally ii-fashion, two-lane street that during rush hour becomes i-mode eastbound in the morning and westbound in the evening.
  • Sierichstraße in Hamburg, Germany, a fully reversible, two-lane city street.
  • The White Nile Bridge connecting Khartoum and Omdurman in Sudan, with 4 lanes total. Traffic is generally directed equally, 2 lanes to Khartoum and to lanes from except in the forenoon, where information technology’s 3 lanes towards Khartoum, and in the evening, 3 lanes towards Omdurman.
  • In Hong Kong, most vehicular tunnels are dual tube. In the early hours ane of the tubes volition be closed, and one of the lanes in the other tube carries reversed traffic.
  • The Baker–Barry Tunnel, one of just two ways of access to the Marin Headlands from U.S. Route 101 in Marin County, California, is non broad enough to accommodate bidirectional traffic. It consists of a single reversible lane for automobiles and ii bicycle lanes. The direction of automobile traffic alternates every five minutes, controlled by a traffic light at each cease of the tunnel. The bicycle lanes, ane for each direction, are located on either side of the reversible lane; buttons on either side of the tunnel trigger flashing signs alerting drivers inbound the tunnel to the presence of cyclists.[32]

Entire roadway formerly reversed


  • The Southern Expressway in Adelaide, Southward Australia, was the world’south longest exclusively one-manner reversible road. It opened in 1997 and eventually traversed 21 kilometres (13 mi) though the city’due south southern suburbs, until its duplication to carry two-way traffic completed in 2014. It inverse direction to conduct peak hour traffic to the urban center eye in the morning and away from the metropolis in the evening. On weekends, the directions were reversed.

One lane formerly reversed


  • Motorway M7 in Hungary from 1972 until the completion of the 2d carriageway in 1975. The existing carriageway between Törökbálint and Zamárdi normally operated with i lane in each direction, but carried traffic towards Budapest just on Lord’s day afternoons.[33]
  • Alfords Betoken Bridge in Australia from 1973 till bridge duplication in 2008. The eye lane was reversible. Afterwards 2008, a 300-metre reversible center lane notwithstanding remained on Alfords Signal Route over Henry Lawson Drive, approximately 500 meters north of this duplicated span.



In shopping centres and metro stations there may be an odd number of escalators, with 1 or more escalators running in different directions in different time of a mean solar day.

Meet as well


  • Contraflow lane
  • Contraflow lane reversal
  • Single-runway road
  • Cease-gap



  1. ^

    Learn the Lanes

  2. ^

    Richard F. Weingroff. “How the Uncommon Became the Commonplace”.
    Public Roads
    (January/Feb 2015).

  3. ^

    “Google Map satellite image of W Caldwell NJ”. Google Maps. Retrieved
    Feb 14,

  4. ^

    “IChoosing Between a Median and a TVVLTL for Suburban Arterials”. CiteSeerX10.1.1.417.5255.

  5. ^

    “Evaluation of Lane Reduction “Road Diet” Measures on Crashes”. U.Southward. Federal Highway Administration. April 12, 2012. Retrieved
    June 1,

  6. ^

    three lane roads such as this are typically created as part of a “road nutrition,” with remainder of the road becoming bicycle lanes.
  7. ^






    Freedman, Amy (Dec 30, 2011). “When are area roads reversed?”.
    WTOP-FM. Washington, DC. Retrieved
    May 12,

  8. ^

    “Inner West Busway”. Roads & Traffic Authorization. Archived from the original on 2013-01-19.

  9. ^

    “Unzip actress lanes on Victoria Rd”.
    Daily Telegraph. xviii December 2010.

  10. ^

    Infrastructure, Ministry building of Transportation and. “Traffic Counterflow Operations – Province of British Columbia”.
    . Retrieved

  11. ^

    Transport, Auckland. “Whangaparaoa Road dynamic lanes”.
    Auckland Transport
    . Retrieved

  12. ^

    Send, Auckland. “Redoubt Road dynamic lanes”.
    Auckland Transport
    . Retrieved

  13. ^

    “7th Artery and 7th Street Reverse Lanes”. City of Phoenix. Archived from the original on November 1, 2011. Retrieved
    Nov 9,

  14. ^

    “DC surface area’s reversible roads and high-occupancy highways”.
    WTOP-FM. December 17, 2018.

  15. ^



    Stroup, Dave. “How Do Lanes Of Traffic Get Reversed On Weekdays?”. Archived from the original on April 10, 2020. Retrieved
    January 19,

  16. ^



    McLean, Mailing Address: 700 George Washington Memorial Parkway Headquarters; Us, VA 22101 Telephone:320-1400 Contact. “Clara Barton Parkway – Clara Barton National Historic Site (U.S. National Park Service)”.
    world wide

  17. ^

    “Archived re-create”
    (PDF). Archived from the original
    on 2016-12-xv. Retrieved

    {{cite web}}: CS1 maint: archived copy equally title (link)

  18. ^

    Google (June ii, 2013). “Fall Creek Parkway at Indiana State Fairgrounds (Indianapolis)” (Map).
    Google Maps. Google. Retrieved
    June 2,

  19. ^

    Chipman, Melissa (Nov 15, 2017). “Can Bardstown Road be fixed?”. LEO Weekly. Retrieved
    July 10,

  20. ^

    Bailey, Phillip M. (June seven, 2018). “Louisville looks at killing blitz hour lanes on Bardstown Road”.
    The Courier-Journal
    . Retrieved
    July 10,

  21. ^




    “The Lincoln Tunnel Sectional Bus Lane”.
    Lincoln Tunnel. Port Authority of New York and New Jersey. December 28, 2012. Retrieved
    May 14,

  22. ^

    Home, 50.; Quelch, M. (Jan 1991). “Route 495 Exclusive Bus Lane: A 20-yr Success Story”.
    World Transit Inquiry
    . Retrieved
    April iv,

  23. ^

    “Lincoln Tunnel HOT Lane Feasibility Study”
    (PDF). Port Authority of New York and New Jersey. 2009. Retrieved
    Apr four,

  24. ^

    Anderson, Steve. “NJ 495 Freeway”. Eastern Roads. Retrieved
    February 11,

  25. ^

    “Lincoln Tunnel Exclusive Charabanc Lane Enhancement Written report”
    (PDF). Port Authority of New York and New Jersey. Archived from the original
    on June 27, 2008. Retrieved
    February 13,

  26. ^

    http://world wide
    dead link

  27. ^

    “Butler Street – Sandusky Ohio”.
    Google Maps
    . Retrieved
    September 14,

  28. ^[
    blank URL

  29. ^

    “Caldecott Roofing | Tunnel Roofers and Roof Repair Experts”.

  30. ^

    “Hawaii Attachment Lane Information”. Hawaii Department of Transportation. Archived from the original on October 17, 2008. Retrieved
    May 21,

  31. ^

    Asimov, Nanette (11 Jan 2015). “Golden Gate Span work finished early as barrier is installed”.
    San Francisco Chronicle. Hearst Newspapers. Retrieved
    11 January

  32. ^

    “Welcome to Walk Bike Marin!”.

  33. ^

    “M7 autópálya a 70-es években”. Archived from the original on 2021-12-12 – via world wide

You Are Driving on a Road With Reversible Lanes


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