Page:UK Traffic Signs Manual - Chapter 3 Regulatory Signs. 2008 (Second Impression 2008).pdf/126

SPEED LIMITS

The sizes of minimum speed limit terminal and repeater signs are shown in table 14-5, the minimum clear visibility distance in table 14-6 and the spacing of repeater signs in table 14-7.

Where a speed limit is enforced by the use of cameras, traffic authorities should follow the signing, visibility and conspicuity guidance set out in DfT Circular 01/2007 ”Use of speed and red-light cameras for traffic enforcement: guidance on deployment, visibility and signing”. The Department also issued an ”Aide Memoire on Speed Limit and Safety Camera Signing” in July 2006. Any reference in the circular and aide memoire to Traffic Advisory Leaflet 1/95 (now withdrawn) should be taken as a reference to this section.

Signs prescribed by the Regulations for indicating speed cameras are diagrams 878, 879, 880 and 880.1. The sign to diagram 878 is used to indicate the boundary of an area where camera enforcement is taking place. Direction 32(1) requires that signs to diagram 878, 879, 880 and 880.1 are 124