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BRIDGES AND OTHER STRUCTURES
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Signing at structure
Diagram 532.2A or 532.3A
Road markings is needed (see Chapter 5)
Final warning sign
Diagram 531.1 (see para 7.22 for location)
Diagram 531.2 if needed 
Additional sign in Advance of last turning
turning opportunity, if needed
Diagram 531.1 plus 572
Advisory signing in advance of start of diversion route for overheight vehicles.
Diagram 2002 or 2003 (Diagram 2107 or 2108 on non-primary routes
Diagram 818.5
Notes:
(1) Either diagram 2002 etc. or 818.5, or both types of advisory signing, may be used.
(2) Continuity signing is essential on the diversion route.
| Note: Black and yellow markings on bridge should not extend over footway |
Figure 7-3 Signs on approach to an arch bridge with a diversionary route
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