Which type of vehicle is it prohibited to stand or be left standing on a road?

1. Correct answer: A trailer that was disconnected from a Semi-trailer or a trailer that was disconnected from a towing vehicle.
2. A work vehicle.
3. A vehicle not equipped with a lighting system.
4. A rescue and towing vehicle.

WhyA trailer or semi-trailer disconnected from its towing vehicle may not be left standing on the road. Without the tractor it cannot be moved quickly and becomes a dangerous obstacle.