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Traffic control signals

Traffic control signals are lights that use
the colors green, yellow and red to control
the flow of traffic at intersections or where
roadways merge. The color of the light
determines which stream of traffic has the
right of way. The traffic control signal may
be vertical or horizontal.

Traffic control signal vertical

The order of lights
for a vertical traffic
control signal is red
at the top, yellow
in the centre, and
green at the bottom.

Traffic control signal horizontal

The order of lights
for a horizontal traffic
control signal is red
on the left, yellow in
the centre, and green
on the right.

SOLID RED LIGHTS:

Steady red horizontal

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.

Right turn at red light Unless a sign
prohibits the turn, a driver may turn right
at a red light after stopping completely
before the stop line or crosswalk, if the

turn can be made safely after yielding to
other traffic.

Left turn at red light 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:

Steady amber horizontal

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:

Steady green horizontal

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

22 A Driver's Guide to Operation, Safety and Licensing

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