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Lane reversals

A lane reversal is an arrangement where traffic is permitted to flow in different directions during different times of the day. It is generally used to provide additional capacity for peak period traffic flow. Generally, the lane reversals are in effect Monday to Friday excluding holidays. There are some exceptions to the holiday exclusions.

Lane reversals on Memorial Drive between 10 Street N.W. and 14 Street N.W., 5 Avenue morning connector, and the 5 Avenue afternoon - pilot are exceptions to the twice a day lane reversals. These lane reversals are designed to address peak traffic flows at specific times during the day. 

Centre Street between 17 Avenue N.W. and 3 Avenue S.W. along with 10 Street between 2 Avenue N.W. and 4 Avenue S.W. have lane reversals that are in effect twice a day:

  • 10 Street south bound from 6:30 a.m. to 8:30 a.m.
  • 10 Street north bound from 3:30 p.m. to 6:30 p.m.
  • Centre Street south bound from 7:00 a.m. to 8:30 a.m.
  • Centre Street north bound from 3:30 p.m. to 6:00 p.m.


Complete an online service request to inquire about the design of a lane reversal or to revise hours on an existing lane reversal. Call 311 directly for any repair or maintenance issues.

A request for a new lane reversal is also available online.

Maps showing the lane reversals for each street are available. Detailed illustrations of the signal sequence and timing are shown on the web page for that lane reversal.

Specific overhead signal displays indicate which lanes are open to traffic and which lanes are not. A green arrow identifies a lane as being open while a red X identifies a lane that is closed. During periods when there are no lane reversals in effect, there will be no displays on the overhead signal.

The overhead signal display is set to provide advance warning about the opening or closing of the lane reversal traffic pattern with a flashing red X indicating that a lane is about to close.

There is a High Occupancy Vehicle lane that operates on Centre Street in conjunction with the lane reversal. This lane gives priority to vehicles carrying two or more people. Additional information on the HOV lane can be found on the HOV lane web page.

The lane reversals on Memorial Drive during the p.m. peak and the 5 Avenue morning connector use temporary signage to direct the traffic flow.