Which vehicle must be equipped with “safety blocks”?

1. Correct answer: Any motor vehicle with an all up weight of more than 5,000kg, except for a bus.
2. Any motor vehicle, regardless of its weight, except for a bus.
3. Any vehicle with an all up weight of 3,500kg or less, except for a bus.
4. Only a vehicle with an all up weight of 4,000kg or less, including a bus.

WhyWheel chocks are required in all motor vehicles heavier than 5,000 kg, except buses.