
What it means
The S-950 sign informs of the radio frequency for specific road information broadcasts. It indicates where you can tune in to useful messages about traffic, road condition, incidents, or recommendations, without replacing the obligation to obey signs, officers, or variable message panels. It usually appears at accesses, motorways, dual carriageways, tunnels, mountain areas, or stretches where road information may be especially useful. When you see it, if you need that information, use the frequency without becoming distracted or handling devices unsafely. In the test it is usually treated as an information sign, not as an order to change channel.
- 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-310
Poblaciones of varios itinerarios

S-320
Lugares of interes por conventional road

S-321
Lugares of interes por motorway o dual carriageway

S-322
Senal of destino hacia una via ciclista o senda ciclable

S-341
Senal of destino of salida inmediata hacia conventional road

S-342
Senal of destino of salida inmediata hacia motorway o dual carriageway

S-344
Senal of destino of salida inmediata hacia una zona area o via of servicios

S-347
Senal of destino of salida inmediata hacia una zona area o via of servicios con salida compartida hacia una motorway o dual carriageway