In British Columbia, black ice is most likely to form:

Question: In British Columbia, black ice is most likely to form:

Answer options:

• At noon ✅ On bridges, overpasses and shaded areas in cold weather
• On dry asphalt
• On gravel

Correct answer: On bridges, overpasses and shaded areas in cold weather

Explanation: Bridges and overpasses freeze first because cold air circulates underneath them, while shaded areas remain colder because they are shielded from the sun. The ICBC driving guide teaches that black ice forms when moisture freezes rapidly on these cold surfaces, creating a highly hazardous, invisible thin layer. Dry asphalt lacks the moisture needed for ice to form, gravel surfaces do not support slick black ice, and midday sun usually melts it. Spotting where traction is compromised under winter conditions is a key ICBC knowledge test safety concept, helping drivers anticipate hazards before losing control.