Highway workers*

*The presence of one of the above three signs designates the start of the work zone. The Highway workers sign may or may not have a WORKERS PRESENT tab as illustrated.

In the work zone drivers must slow to the posted speed through the entire zone and 60 km/h or less when passing a worker, flag person or equipment occupied by a worker. Some cities have bylaws requiring drivers to obey work zone speed limits through the entire construction area. Please be familiar with the bylaws in your area.

Truck entrance left/right
The location at which trucks are entering, leaving or crossing

Overhead lines
Be prepared to stop if you are driving a vehicle with a high load

Construction ahead
This sign indicates you are entering a construction zone. Drive with extra caution and be prepared for changes in the speed limit

Be prepared to stop

Pavement drop-off
This sign warns motorists that they are on or approaching a section of roadway where either the adjacent lane or shoulder or both are lower or higher than the motorist's travel lane