In a tunnel, what minimum safety distance must the driver of a car keep from the vehicle in front if they do not intend to overtake?

Correct answer

100 metres or an interval of 4 seconds.

When a driver is in a tunnel and does not intend to overtake the vehicle in front, it is essential to maintain an adequate safety distance. This distance must be at least 100 metres or a minimum interval of 4 seconds from the vehicle ahead. The main purpose of this rule is to ensure safety in traffic situations inside the tunnel. Maintaining an adequate distance is essential for several reasons. Firstly, it gives the driver enough time and space to react to any unforeseen event, such as sudden braking by the vehicle in front. This is especially important in an enclosed environment such as a tunnel, where conditions can change quickly and visibility may be limited.