What it means
The S-850 sign indicates a priority route. It is a supplementary panel or indication that helps you understand where the priority route continues at a junction or regulated stretch, so you must read it together with the main priority sign. It does not by itself create independent priority if it is not interpreted with the rest of the signing. It usually appears at intersections where the priority road does not follow the most intuitive path. When you see it, identify the priority route and adapt your behaviour depending on whether you are on it or outside it. In the test they often ask that it complements priority and shows its layout.
- 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-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
S-261
Advance signing on a conventional road for a service zone or area
S-263
Gives advance information on a motorway or dual carriageway for a service zone or area with a shared exit
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