Diversion of traffic route

Details:

A special route arranged for traffic to follow when the normal route cannot be used.Where, in an emergency, it is necessaryto close a section of motorway or othermain road to traffic, a temporary signmay advise drivers to follow a diversionroute. To help drivers navigate the route,black symbols on yellow patches maybe permanently displayed on existing direction signs, including motorway signs. On all-purpose roads,the symbols may be used on separate signs with yellow backgrounds.