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

# Safety distance in tunnels In tunnels, reduced visibility and special conditions require maintaining an increased safety distance. The rule establishes a minimum distance of **100 meters** or a time interval of **4 seconds** between vehicles for a car. This distance allows for adequate reaction to any unforeseen event and prevents chain collisions in enclosed spaces where the danger is greater.