This sign indicates:
A)The existence of a tunnel on a motorway with a minimum separation requirement inside it.
B)The minimum distance required in a tunnel located on a motorway.
C)The existence of a minimum distance control device between vehicles at a point or section of a motorway or dual carriageway, with possible informational supplementary panels.Correct
The sign informs of a minimum separation control on a motorway or dual carriageway. This requires drivers to maintain a safe distance between vehicles, improving safety and preventing rear-end collisions. Supplementary panels may add additional information about the section or the exact distance to be maintained.