What it means
The P-33 sign warns of reduced visibility. It means you may enter a stretch where seeing and being seen is more difficult because of fog, smoke, heavy rain, dust, road layout, or another circumstance compatible with the surroundings, so you must increase prudence. It usually appears before areas where that lack of visibility is common or especially dangerous for anticipating obstacles, pedestrians, or slow vehicles. When you see it, moderate speed, increase distance, and use the lighting appropriate to the real situation. In the test they often ask about preventive behaviour and distinguish it from a weather or tunnel sign.
- CategoryWarning signs
- ShapeTriangular, red border
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
P-50
Other dangers
P-1
An intersection where the road you are travelling on has priority
P-1A
An intersection where you keep priority over a road on the right
P-1B
An intersection where you keep priority over a road on the left
P-1C
An intersection where you have priority over traffic joining from the right
P-1D
An intersection where you have priority over traffic joining from the left
P-2
An intersection where priority to the right applies
P-3
Traffic lights are nearby