You travel through a tunnel in a vehicle with a MAM exceeding 3,500 kg and do not intend to overtake. What specific minimum separation from the vehicle ahead does the regulation set?

Correct answer

At least 150 metres or a minimum interval of six seconds.

At least 150 metres or a minimum interval of six seconds under Article 95.6. For vehicles with a MAM not exceeding 3,500 kg, the general minimum is 100 metres or four seconds. You must also always be able to stop without collision if the vehicle ahead brakes suddenly; conditions may require greater separation. That general duty is also valid and must not be presented as a false answer alongside the specific minimum. This case concerns moving traffic rather than being stationary in a queue.