
What it means
The S-900 sign warns of fire danger. It informs of an area where fire risk is relevant and requires extra caution with cigarette ends, stops, breakdowns, hot exhausts, or other conduct that could start or worsen a fire. It usually appears in woodland, forest areas, dry zones, national parks, or accesses where traffic coexists with vulnerable vegetation. When you see it, avoid stopping on dry grass, do not throw objects, and follow any additional signed restriction. In the test they often distinguish it from the sign locating a fire extinguisher, because here the message is risk, not available equipment.
- 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-266A
Presenalizacion on motorway o dual carriageway of una via of servicio con salida exclusiva

S-270
Presenalizacion of dos salidas muy proximas

S-271
Presenalizacion of area of servicio

S-300
Poblaciones of un itinerario por conventional road

S-301
Poblaciones of un itinerario por motorway o dual carriageway

S-310
Poblaciones of varios itinerarios

S-320
Lugares of interes por conventional road

S-321
Lugares of interes por motorway o dual carriageway