When air bags are installed in a vehicle:
- It is unnecessary to install seat belts in that vehicle.
- Correct answer: The seat belts must be fastened at all times when the vehicle is in motion.
- If the airbag system malfunctions, seat belts should not be worn.
- The seat belts should only be worn when the air big system malfunctions.
Why this is the answer
The correct answer in the official bank: The seat belts must be fastened at all times when the vehicle is in motion.
Airbags are only a supplementary restraint system and never replace seat belts. The belt holds the occupant in the correct position and stops them from being thrown into an airbag that inflates with great force, which could cause serious injury. So seat belts must be fastened whenever the vehicle is moving, whether or not the airbag system works properly.