When driving a truck inside a tunnel with one lane in each direction, with no intention of overtaking, what is the minimum mandatory safety distance that must be kept from the vehicle in front?

Question

DentroTest · Accepted Answer

As established by the General Traffic Regulations, when driving through tunnels or underpasses with no intention of overtaking, drivers must respect an increased front safety distance. In the case of vehicles with a maximum authorized mass (MAM) of more than 3,500 kg, such as trucks covered by the class C license, the minimum separation required is at least 150 meters or an equivalent time interval of 6 seconds. For vehicles of up to 3,500 kg MAM (such as passenger cars), the rule sets a minimum of 100 meters or 4 seconds. The options of 25 or 50 meters are completely insufficient to guarantee safe stopping and evacuation in a confined space in an emergency.

When driving a truck inside a tunnel with one lane in each direction, with no intention of overtaking, what is the minimum mandatory safety distance that must be kept from the vehicle in front?

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