BC Warning Signs — Complete ICBC Guide
Warning signs in BC are diamond-shaped with a yellow or orange background and black symbols. They alert drivers to hazards, changes in road conditions, or unusual situations ahead. The ICBC knowledge test regularly includes questions about warning signs — they are one of the most heavily tested categories.
BC Warning Signs — Full List
Each sign includes its meaning, a detailed explanation, and an ICBC test tip.
Curve Warning
A curve in the road ahead
Slow down before reaching the curve. The safe speed for the curve may be posted on an advisory speed tab below the sign.
Test Tip
You must reduce speed before the curve, not during it.
Sharp Curve
A sharper than normal curve ahead
Indicates a curve that requires significant speed reduction. Advisory speed tabs are commonly posted below this sign.
Test Tip
If an advisory speed is posted below this sign, it is the safe speed for the curve, not a posted limit.
T-Intersection
The road ends in a T — you must turn left or right
The road ahead does not continue. You must turn right or left at the T-junction.
Test Tip
You cannot go straight through a T-intersection. You must yield to cross-traffic.
Crossroads
An intersection with four roads
Warns of a four-way intersection ahead. Right-of-way rules apply as at any intersection.
Test Tip
The sign warns of an intersection — you still must obey traffic controls at the actual intersection.
Slippery When Wet
Road surface is slippery when wet
This sign indicates pavement that becomes especially slick when wet, such as polished concrete or painted surfaces. Reduce speed and increase following distance.
Test Tip
Reduce speed and increase following distance on wet roads with this sign.
Pedestrian Crosswalk
A marked pedestrian crossing is ahead
Warns drivers that a marked crosswalk is approaching. Slow down and be prepared to stop for pedestrians.
Test Tip
This sign warns of a crosswalk ahead. You must yield to pedestrians in or entering a crosswalk.
School Zone Sign
A school or school crossing is nearby
Fluorescent yellow-green school zone signs alert drivers to reduced speed limits (30 km/h) when lights are flashing or children are present.
Test Tip
The 30 km/h school zone limit applies when the amber lights are flashing.
Railway Crossing
A railway crossing is ahead
A round yellow warning sign indicates a railway crossing. An X-shaped crossbuck sign marks the actual crossing.
Test Tip
The round yellow sign warns you in advance. Never drive around or under lowered crossing gates.
Deer Crossing
Deer or wildlife frequently cross this road
Warns drivers that deer or other wildlife commonly cross the road in this area. Scan the shoulders and be prepared to brake.
Test Tip
If you see this sign, scan both sides of the road and reduce speed.
Narrow Bridge
The bridge ahead is narrower than the road
The bridge may not accommodate two full-width lanes. Larger vehicles may need to yield or take turns crossing.
Test Tip
Slow down before a narrow bridge and watch for oncoming traffic.
Hill/Steep Grade
A steep downhill grade ahead
The percentage grade is often shown on a supplemental tab. Trucks may need to use a lower gear to control speed on long descents.
Test Tip
Use engine braking (lower gear) on long steep descents to avoid brake fade.
Winding Road
A series of curves ahead
Indicates multiple curves or a winding stretch of road. Reduce speed and stay in your lane through the curves.
Test Tip
Winding road signs indicate multiple curves — reduce speed accordingly.
What to Know for the ICBC Test
Key facts about bc warning signs on the BC knowledge test.
What shape and colour are BC warning signs?
BC warning signs are diamond-shaped with a yellow background and black symbols or text. School zone signs use fluorescent yellow-green. Railway advance warning signs are round.
What does a yellow diamond sign with a curved arrow mean?
A yellow diamond sign with a curved arrow indicates a curve in the road ahead. You should reduce speed before reaching the curve, not during it.
When does the 30 km/h school zone speed limit apply in BC?
The 30 km/h school zone speed limit applies when the amber lights on the school zone sign are flashing. Outside of flashing light hours, the standard posted speed limit applies.
What should you do when you see a deer crossing warning sign in BC?
Reduce your speed and scan both sides of the road. Deer often move in groups, so if one crosses, others may follow. Be prepared to stop.
Quick Study Tips
- Pay attention to shape and colour first — they tell you the sign category before you read the symbol.
- Regulatory signs are legally enforceable. Warning signs are advisory but should always be obeyed.
- Advisory speed tabs below warning signs are recommendations, not posted speed limits.
- When in doubt, slow down. The ICBC test rewards caution over speed.
- Practice road signs until you can identify them in under 2 seconds — the same as driving.
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