| Maximum speed limit | Size of sign (mm) | |
|---|---|---|
| Terminal | Repeater | |
| 40mph and below | 600 | 300 |
| 50mph | 600 | 300 |
| 60mph (dual carriageway) | 600 | 450 |
| National limit (single carriageway) | 600 | 450 |
| National limit (dual carriageway) | 900 | 450 |
| NOTE: For terminal signs, the maximum speed limit is that on the approach. | ||
| Dual carriageway road subject to the national speed limit | 75 |
| Dual carriageway road subject to a maximum speed limit of 60 mph or a single carriageway road subject to the national speed limit | 65 |
| Any other road | 50 |
| NOTE: The minimum clear visibility distance indicated should be applied to both terminal signs. | |
| Maximum distance between a terminal sign and first repeater | 250 | ||||
| Maximum distance between consecutive
signs on the same side of the carriageway |
350 | ||||
| Maximum distance between consecutive signs on alternate sides of the carriageway | 500 | ||||
| NOTE 1: The spacing of repeaters is the same for all minimum speed limits and types of road.
NOTE 2: Repeater signs need not be provided where the length of the speed limit is less than 350 m. | |||||
14.38 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.
INFORMATORY SIGNS FOR SPEED CAMERAS
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878 Area in which cameras are used to enforce speed limits (alternative types) 1000 max
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879 Reminder to drivers within an area in which cameras are used to enforce speed limits
14.39 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 Any reference in the circular and aide memoire to Traffic Advisory Leaflet 1/95 (now withdrawn) should be taken as a reference to this section.
14.40 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
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