
What it means
The S-870 sign indicates the application of signing. It is a supplementary panel specifying to which stretch, lane, direction, user, time, or circumstance the main sign it accompanies applies. Its meaning should not be read in isolation, because it always depends on the upper sign and on the specific text or symbol on the panel. It is usually placed below danger, regulatory, or information signs to define their scope. When you see it, interpret both signs as a whole before deciding. In the test they often check that you understand its supplementary function and do not confuse it with an independent mandatory or prohibition sign.
- 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-263A
Gives advance information on a motorway or dual carriageway for a service zone or area with an exclusive exit

S-264
Gives advance information on a conventional road for a service road

S-266
Gives advance notice on a motorway or dual carriageway of a service road with a shared exit

S-266A
Gives advance notice on a motorway or dual carriageway of a service road with an exclusive exit

S-270
Gives advance notice of two exits very close together

S-271
Gives advance notice of a service area

S-300
Towns on an itinerary by conventional road

S-301
Towns on an itinerary by motorway or dual carriageway