Application
Contra-flow bus lanes are typically applied to bus routes to create strategic, efficient connections rather than as a continuous application along a corridor.
The ideal contra-flow bus lane is designed similar to a regular 2-way street, with non-transit vehicles barred from using the lane or lanes in one direction.
Benefits & Considerations
Contra-flow bus lanes may enable connectivity and shorten travel times for bus routes.
When there is illegal encroachment by non-transit uses, contra-flow bus lanes will be ineffective.
Critical
Contra-flow bus lanes should be accompanied by a ONE WAY EXCEPT BUSES sign (MUTCD 2G-03).
A double-yellow centerline marking (MUTCD 3D-02) or buffer marking (MUTCD 3D-02) should be applied to separate contra-flow bus traffic from opposing traffic. If used, the buffer should be a minimum of 3 feet wide.
BUS ONLY markings (MUTCD 3D-01) should be applied to emphasize the lane and to deter drivers from using it.
Strict enforcement is necessary to maintain the lane’s use and integrity.
Traffic signal coordination should be updated to reflect the 2-way flow of buses.
Arrow pavement markings (MUTCD 3B-20) should be used to indicate the path of travel.
Recommended
A 2-lane-wide profile of 22–24 feet is preferred for contra-flow bus travel. This allows buses to pass other buses (and stopped vehicles) and makes the street design clearer to pedestrians. Depending on the length of the contra-flow lane and the available roadway width, a narrower lane may be acceptable.
Red colored paint should be applied to emphasize the lane and deter drivers from using it.
This double bus lane allows vehicles to pass each other.
Optional
Bicycle traffic may be encouraged to use the contra-flow bus lane in certain instances, as long as the lane is wide enough to allow safe passing. Where bicycle traffic is permitted, a ONE WAY-EXCEPT BUSES, BIKES (MUTCD 9B-01) sign should be used.
Curbs, medians, or bollards may be applied to deter encroaching vehicles, though access to the curb should be maintained for emergency vehicles.
Transit Street Design Guide
Learn more about transit streets in NACTO’s Transit Street Design Guide.