Seat belts are most effective when they are worn by:

  1. The person driving the car.
  2. Passengers when they are on a long drive.
  3. All occupants of a car being driven on an expressway.
  4. All occupants of a car every time the car is driven. ✓

Answer: D. All occupants of a car every time the car is driven.

Seat belts are most effective when all occupants of a car wear them every time the car is driven.

Why this is the answer

The handbook's safety belt section says belts save lives only when used correctly on every trip in a motor vehicle. It describes how, in a crash, the belt keeps a person from being ejected, from hitting other people or the steering wheel and windshield, and in position to control the car. That protection is for everyone riding, not just the driver or people on certain roads or trips, so the effective habit is all occupants wearing belts whenever the car is driven.

Why the other answers are wrong

Remember it

Think "every trip, every person" — not just the driver or a special road.

Official handbook: Florida Driver License Handbook (FLHSMV), 3. Your Driving Privilege – Violations of the Driver License Law, p. 27

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.