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Lane reversal signals Lane reversal signals are used to control the direction of traffic on specific lanes of a roadway. A common use of this control is reversible lanes that change the flow of traffic during different times of the day. The signal(s) over one or more lanes change between a red X and a green arrow. Solid red X: When a red X is displayed over a driving lane, the driver does not enter or remain in that lane. This signal indicates that the lane is being used by oncoming traffic. Move safely into a lane with a green arrow. Downward pointing green arrow: A driver facing the downward pointing green arrow is permitted to travel in that lane.Text extracted from the PDF for reference and may contain layout artefacts. The official PDF is authoritative.
Open official handbook at page 26 ↗Source: Driver's Guide: cars and light trucks, Spring 2026. Contains information licensed under the Open Government Licence – Alberta.