Alberta Class 7 Practice

Traffic control signals Traffic control signals are lights that use the colours green, yellow, and red to control the flow of traffic at intersections or where roadways merge. The colour of the light determines which stream of traffic has the right-of-way. The traffic control signal may be vertical or horizontal. The order of lights for a horizontal traffic control signal is red on the left, yellow in The order of lights the centre, and for a vertical traffic green on the right. control signal is red at the top, yellow in the centre, and green at the bottom. Solid red light: Drivers facing a traffic control signal displaying a solid red light must bring their vehicles to a complete stop before the stop line or crosswalk that is directly in front of the vehicle. If there is no stop line or crosswalk, drivers must stop before the intersection. Vehicles must remain stopped at the red light until it turns green, unless safely turning right after stopping. A solid double red light has the same meaning as a single red light. Turning right at a red light is permitted provided that there is no sign prohibiting the turn. Before making the turn the vehicle must come to a complete stop before the stop line or crosswalk. Complete the turn when it is safe to do so while yielding to any other traffic. Unless a sign prohibits the turn, the only left turn permitted at a red light is onto a one-way street from a one-way street. This turn is only permitted after the vehicle is brought to a complete stop before the stop line or crosswalk, and if the turn can be made safely after yielding to other traffic. Solid yellow light: When a green light changes to yellow, it warns that the light will change to red immediately and drivers must prepare to stop or clear the intersection. Drivers approaching an intersection with a solid (not flashing) yellow traffic control light must bring their vehicles to a complete stop before the stop line or crosswalk, unless a point has been reached at the intersection where stopping cannot be done safely. If there is no stop line or crosswalk, vehicles must stop before the intersection. Drivers already in the intersection and facing a yellow light must safely clear the intersection. Solid green light: Drivers facing a solid green traffic control light are permitted to travel through the intersection without stopping, unless required to yield to oncoming traffic when turning left or to pedestrians in the crosswalk when turning right or left. When approaching a green light, anticipate that it will turn yellow. A “stale” green light means the light has been green for a while and will turn yellow soon. A good tip is to check the

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Source: Driver's Guide: cars and light trucks, Spring 2026. Contains information licensed under the Open Government Licence – Alberta.