Annex A: Summary of Main Changes to Speed Limit Signing Regimes in Traffic Signs Regulations and General Directions 2002 ( TSRGD 2002)
Boundary Sign 2402.1
Where this is used as part of a gateway treatment a speed limit terminal sign may be co-located with the boundary sign. It may also be mounted on a rectangular or non-rectangular backing board (either grey or yellow).
Speed Limits at Road Works
Direction 10(3) requires the placing of signs to diagram 670 or 671 at the end of road works (in addition to the 'End of road works restrictions' signs to diagram 7006 or 7001 combined with an 'End' plate to diagram 645) if the stretch of road covered by the temporary restrictions includes a point at which the permanent speed limit has been changed. This avoids any confusion where the speed limit has been lowered at road works but the original speed limit is being reinstated. However, there is no requirement to sign the limit at the end of the works if the limit is the same as at the start of the works.
Temporary New 30 mph Speed Limit Sign (Diagram 7032)
A new temporary sign has been included to inform drivers of a newly imposed 30 mph speed limit where it is adjacent to an existing 30 mph road. It is intended for use on a lit street where the road speed limit had previously been higher. This temporary sign can be used for up to 6 months.
Informatory 30 mph and Camera Warning Sign (Diagram 880)
The sign to Diagram 880 is a sign to inform drivers of the presence of enforcement cameras on a road where a 30 mph speed limit is in force and a system of street lighting is in operation. The sign cannot be used as a repeater sign.
Other Camera Signs (Diagrams 878 and 879)
Signs to diagram 878 can be used to indicate traffic signal cameras, speed cameras, traffic signal and speed cameras, traffic enforcement cameras, police cameras, police enforcement cameras and bus lane cameras. Signs to Diagram 879 are camera symbol repeater signs and can be placed on routes and in areas where enforcement cameras are from time to time in use.
Carriageway Speed Limit Roundel Markings
Speed limit carriageway markings can be used without special authorisation provided they are used in conjunction with upright speed limit signing. They may not be used as 30 mph repeater signs on roads with a system of street lighting. In exceptional circumstances the Executive will consider special authorisation for carriageway roundels without upright speed limit signing in areas of outstanding natural beauty but Traffic Authorities are expected to consider how the roundels will be maintained as they can become worn and obscured by adverse weather conditions, which could affect enforcement.
Full details of the changes to speed limit signing regimes in the Traffic Signs Regulations and General Directions are set out in the Department for Transport Circular 02/2003.