What would be the effect on stopping distance if an empty commercial vehicle with air brakes is driven at the same speed as a fully loaded one?

Question: What would be the effect on stopping distance if an empty commercial vehicle with air brakes is driven at the same speed as a fully loaded one?

Answer options: ✅ The empty vehicle will have a shorter stopping distance.

• The empty vehicle will have a longer stopping distance.
• The stopping distance will be the same for both.
• The empty vehicle's stopping distance will depend on tire pressure.

Correct answer: The empty vehicle will have a shorter stopping distance.

Explanation: An empty vehicle has less momentum than a loaded one, requiring less braking force and thus a shorter distance to stop when travelling at the same speed.