Warning Signs — 19 Signs to Know
Warning signs are yellow and diamond-shaped. They alert you to a hazard or change in road conditions ahead — a curve, an intersection, an animal crossing — so you have time to react safely. These 19 cover the signs you’re most likely to see on a Canadian knowledge test, including one Québec-specific sign.
Curve Ahead
The road curves left or right ahead. Slow down before the curve, not during it.
Reverse Curve
The road curves one way, then immediately the opposite way — an S-shape. Ease off through both curves.
Winding Road
A series of curves ahead, sometimes for several kilometres. Hold a steady, reduced speed.
T-Junction
Your road ends ahead at a crossing road, forming a T. You’ll need to turn left or right.
Y-Junction
The road splits into two, forming a Y. Choose your branch before you reach the split.
Side Road Intersection
An intersection ahead where neither road has the right-of-way. Slow down and be ready to yield.
Merging Traffic
Traffic from another road is about to join yours. Check your mirrors and adjust your speed or position.
Divided Highway Begins
The road ahead splits into two one-way roadways with a median between them. Keep right.
Divided Highway Ends
The median ends ahead — you’re back on a normal two-way road with oncoming traffic.
Lane Ends
Your lane is ending ahead. Check your mirrors and merge into the continuing lane in good time.
Roundabout Ahead
A roundabout is ahead. Slow down and be ready to yield to traffic already circulating.
Railway Crossing Ahead
A railway crossing is ahead. Slow down, look both ways, and be ready to stop.
Road Narrows Ahead
The road ahead becomes narrower. Adjust your position and watch for oncoming traffic.
Narrow Bridge Ahead
A bridge or structure ahead is narrower than the road. Slow down and be ready to share it.
Steep Hill
A steep grade is ahead. Downshift and control your speed rather than riding the brakes.
Slippery When Wet
The road surface can be slippery in wet conditions. Reduce speed and increase following distance.
Deer / Moose Crossing
Wildlife may cross the road here, especially at dawn and dusk. Slow down and scan the roadside.
Two-Way Traffic Ahead
You’re returning to a two-way road after a divided or one-way stretch. Expect oncoming traffic.
Moose Presence (Québec)
Warns that moose may be present on or near the road. Common on Québec highways — slow down and scan the roadside, especially at dawn and dusk.