Which of the following decreases your traction?

  1. Loose helmet
  2. Exhaust from other vehicles
  3. Storm drains, wet leaves, tar patches ✓
  4. All of the above

Answer: C. Storm drains, wet leaves, tar patches

Storm drains, wet leaves and tar patches decrease traction.

Why this is the answer

The motorcycle handbook tells riders that two-wheel vehicles can easily lose traction on rough or slippery surfaces and fall, so riders should scan the road ahead for hazards. Its list of poor road surfaces includes wet leaves and other debris, oil and tar patches, and storm drains. Loose helmets and exhaust from other vehicles do not appear on that list of surface conditions that reduce grip.

Why the other answers are wrong

Remember it

Your tires grip the surface, so watch the surface itself for drains, leaves and tar patches.

Official handbook: ICBC Learn to Ride Smart, Chapter 6: see-think-do – think, p. 73

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.