
What it means
The S-810 sign indicates the length of the dangerous stretch or the stretch subject to a prescription. It is a supplementary panel specifying for what distance the danger, prohibition, obligation, or indication of the main sign continues. It should not be read in isolation, because its meaning always depends on the sign above. It is usually placed below signs when the risk or regulation is not limited to the exact point where they are installed. When you see it, maintain the required behaviour for the full indicated length. In the test it is often distinguished from the panel showing distance to the start, because here the stretch length is expressed.
- 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-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

S-260
Gives advance information about lanes