A person may legally ride in the back of a pickup truck when:

  1. The sides of the pickup bed are at least 24 inches high.
  2. The back of the pickup is covered with a camper shell.
  3. In a secured seat and while using an approved safety belt. ✓

Answer: C. In a secured seat and while using an approved safety belt.

A person may legally ride in the back of a pickup truck only when the truck has secure seats and safety belts, and the rider is secured in a seat with an approved belt.

Why this is the answer

The California Driver Handbook tells drivers they may not let anyone ride in the back of a pickup or other truck unless that vehicle has secure seats and seat belts. So the lawful situation is a rider sitting in a proper seat, belted in with an approved safety belt. The handbook does not give a pass based on how tall the bed sides are or on having a camper shell over the bed. The only condition it names is secure seating plus safety belts, which is what the correct choice describes.

Why the other answers are wrong

Remember it

Ask yourself whether there is a real seat with a real belt back there. If not, nobody rides in the bed.

Official handbook: California Driver Handbook (DL 600), Section 7: Laws and Rules of the Road, p. 52

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.