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I. Signs
Temporary condition signs

These signs warn of unusual temporary conditions such as road work zones, diversions, detours, lane closures or traffic-control people on the road. They are usually diamond-shaped with an orange background and black letters or symbols.

Here are some common temporary condition signs:

Construction work one kilometre ahead.
a temporary condition sign
Road work ahead.
a temporary condition sign
Survey crew working on the road ahead.
a temporary condition sign
Traffic control person ahead. Drive slowly and watch for instructions.
a temporary condition sign
You are entering a construction zone. Drive with extra caution and be prepared for a lower speed limit.
a temporary condition sign
Temporary detour from normal traffic route.
a temporary condition sign
Flashing lights on the arrows show the direction to follow.
a temporary condition sign
Pavement has been milled or grooved. Your vehicle's stopping ability may be affected so obey the speed limit and drive with extra caution. Motorcyclists may experience reduced traction on these surfaces.
a temporary condition sign
Lane ahead is closed for roadwork. Obey the speed limit and merge with traffic in the open lane.
a temporary condition sign
Closed lane. Adjust speed to merge with traffic in lane indicated by arrow.
a temporary condition sign
Do not pass the pilot or pace vehicle bearing this sign.
a temporary condition sign
Reduce speed and be prepared to stop.
a temporary condition sign
Follow detour marker until you return to regular route.
a temporary condition sign
Enforces doubling the HTA fines for speeding in a designated construction zone when there are workers present.
a temporary condition sign