||The Traffic Signs Manual contains advice to traffic authorities on the correct use of signs and road markings, in the discharge of their duties under section 122 of the Road Traffic Regulation Act 1984. Mandatory requirements are set out in the current version of the Traffic Signs Regulations and General Directions. The Manual is applicable in England, Wales, Scotland and Northern Ireland. This volume focuses on the use of warning signs used to alert drivers to potential danger ahead, it is applicable in England, Wales, Scotland and Northern Ireland. This revised edition also contains an updated Bridges and Other Structures section.