
What it means
The S-800 sign indicates the distance to the beginning of the danger or prescription. It is a supplementary panel specifying how far away the situation announced by the main sign begins, whether a warning, prohibition, obligation, or other regulation. It should not be read in isolation, because its meaning always depends on the sign it accompanies. It is usually placed below signs when the point of application is not immediate. When you see it, adapt your driving in advance and prepare the response for when the indicated stretch begins. In the test they often ask that the panel measures distance, not the total length of the stretch.
- CategoryInformation signs
- ShapeRectangular or square, blue
Practise DGT questions featuring this sign
Ten DGT 2026 exam-style questions about signs, with an explanation after each. Free, no signup.
Other related signs

S-230A
Gives advance information, with signs over the carriageway, for directions on a conventional road toward another conventional road and the road's own direction

S-232
Gives advance information, with signs over the carriageway, for directions on a conventional road toward a motorway or dual carriageway

S-232A
Advance signing with signs above the carriageway on a conventional road toward a motorway or dual carriageway and the through direction

S-235
Gives advance directions, through overhead signs, on a motorway or dual carriageway toward any road

S-235A
Gives advance information with overhead signs on a motorway or dual carriageway for directions toward any road and the continuing direction

S-242
Gives advance information on a motorway or dual carriageway for two very close exits toward any road

S-242A
Gives advance information on a motorway or dual carriageway for two very close exits toward any road and the continuing direction

S-250
Gives advance notice of an itinerary