- Warning signs draw the attention of the road users to upcoming danger
Background colour is Yellow
Often Diamond shaped, but sometimes square or rectangle
- Advance Regulatory Signs
Indicate that there is a stop/yield sign ahead.
- Advance Lane Direction
Indicates a change in direction ahead.
Advance Turn or Curve
Indicates a turn or curve (possibly sharp) coming up on the roadway
The advisory speed tab may accompany a sign to indicate the speed for turning safely
- Advance Crossing
A crossing of pedestrians, animals, bicycles, trucks, ATVs etc is coming up ahead
- Advance Intersection
Indicates an intersection ahead
- Railroad crossing signs indicate an upcoming train crossing at 50m (urban) or 150m (rural) ahead.
- Converging Roadways
Merging lane indicates that two lanes are coming together up ahead.
Roundabout and traffic circle signs indicate upcoming multiple roadways converging ahead.
Drivers entering must yield to drivers already in the circle
Indicate changes in the roadway including possible lane narrowing or loss as well as narrow passage.
May be accompanied with a tab indicating the distance to the lane reduction/change
- Hazard Markers
Yellow rectangular signs with black lines at 45 degrees.
Channel traffic to the lower end of the stripes
Divided Highway Warn of an upcoming divided highway, obstacle in the roadway or the end of a divided highway
Indicate a hill of a downgrade that requires special precautions.
Drivers should check their brakes and prepare to downshift (using the engine to slow the vehicle down)
Include degree of slope signs and reduced visibility signs
- Hazardous Road
Note of areas on the road where it may be slippery, windy, or have surface irregularities/changes
Pavement Ends signs and Slippery When Wet signs are included here.