The greatest risk in following a truck too closely is

  1. the truck will block your view of what is ahead ✓
  2. the turbulence could affect your steering
  3. the truck may change lanes suddenly
  4. other drivers may not see you behind the truck

Answer: A. the truck will block your view of what is ahead

The greatest risk is that the truck will block your view of what is ahead.

Why this is the answer

The handbook treats a blocked view as a hazard and warns that tailgating lets the vehicle in front hide hazards ahead from you. It also gives a large truck as an example of something that blocks your view. Following a truck closely puts you in that situation, so you cannot see the driving scene as well. The handbook says to be extra cautious when anything blocks your view.

Why the other answers are wrong

Remember it

Ask yourself: can I see the hazards ahead past this truck? If not, back off.

Official handbook: ICBC Learn to Drive Smart, Chapter 5: see-think-do – Do, p. 72

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.