Distances to be complied with
In the Tunnel, all vehicles (light weight vehicles, heavy weigh vehicles, motorcycles, etc.) must maintain a minimum distance of 150 meters while driving and 100 meters when stopped.
To ensure necessary safety, it is imperative to comply with these distances.
In the Mont Blanc Tunnel, blue lights help you to maintain the required 150 m distance between vehicles. There should be two marks between your vehicle and the one ahead of you