The Traffic Signs Manual Chapter 4: Warning Signs explains the use of the warning signs prescribed by the Traffic Signs Regulations. It enables the correct sign to be used, and advises on the appropriate size and siting to ensure adequate warning of the hazard.

The traffic signs manual gives guidance on the use of traffic signs and road markings prescribed by the Traffic Signs Regulations and covers England, Wales, Scotland and Northern Ireland.

Key topics

• Junctions
• Deviation of Route
• Road narrows
• Two-way traffic and dual carriageway roads
• Hills
• Bridges and other structures
• Traffic signals
• Pedestrians
• Animals and farm traffic
• Water
• Road surface
• Road humps
• Low-flying aircraft
• Falling or fallen rocks
• Hazard markers
• Other Danger
• Distance Plates
• Slow-moving vehicles
• Level crossings
• Cycling
• Refuge beacon

This publication supersedes the 2013 edition (ISBN 9780115532245).