This sign indicates that inside a tunnel on a motorway or dual carriageway:
A)It is recommended to maintain a prudent distance, without any specific reference.
B)A minimum distance that applies to passenger cars and trucks but not to other vehicles.
C)It is mandatory to maintain between vehicles the number of chevron road markings indicated by the sign.Correct
The sign informs that, inside a tunnel on a motorway or dual carriageway, drivers must maintain a mandatory minimum distance from the vehicle ahead. To assist with this, the road surface is marked with chevron symbols, which serve as a reference. This measure aims to prevent collisions in enclosed spaces, where an accident can have serious consequences due to limited visibility and difficulty of evacuation.