When you see this road sign, what is the situation in which you must keep a minimum distance of 70 metres from the vehicle in front?

This road sign indicates a minimum distance rule specifically for heavy vehicles. According to German traffic regulations, when driving a lorry with a permissible total weight over 3.5 tons behind another lorry of the same category or when driving a tractor unit behind a lorry over 3.5 tons, you must keep at least 70 meters distance.

The purpose of this rule is to enhance safety by preventing tailgating among large vehicles, which require longer braking distances. It does not apply when a lorry is following a car with a trailer, as those situations have different safety considerations.

Remembering this rule helps avoid accidents and ensures smoother traffic flow among heavy vehicles on roads where this sign is posted.