
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.
- Category
- Information signs
- Shape
- Rectangular 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
Presenalizacion on motorway o dual carriageway of dos salidas muy proximas hacia cualquier carretera y direction propia

S-250
Presenalizacion of itinerario

S-260
Presenalizacion of carriles

S-261
Presenalizacion on conventional road of zona o area of servicios

S-263
Presenalizacion on motorway o dual carriageway of una zona o area of servicios con salida compartida

S-263A
Presenalizacion on motorway o dual carriageway of una zona o area of servicios con salida exclusiva

S-264
Presenalizacion on conventional road of una via of servicio

S-266
Presenalizacion on motorway o dual carriageway of una via of servicio con salida compartida