Prohibition signs
Motorcycles Prohibited (R55)

Motorcyclists may not enter this part of the carriageway, or if this sign is displayed on a freeway, motorcyclists must leave at the first exit.
Where
On any public road and at the beginning of pedestrian and separate cycle lanes.
Purpose
To prohibit motorcycles, on part of a carriageway, for safety reasons.
Action
Motorcyclists may not enter this part of the carriageway, or if this sign is displayed on a freeway, motorcyclists must leave at the first exit.
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Other prohibition signs
- No U-turn, night-time (CS2)
- Speed Limit (R38)
- Mass Limit (R39)
- Axle mass limit (R40)
- Height Limit (R41)
- Length Limit (R42)
- Excessive Noise Prohibited (R43)
- Hitch-hiking prohibited (R207) (R44)