| Sign | Title | Category | Shape | Colour (Background) | Colour (Foreground) | |
|---|---|---|---|---|---|---|
                                                                            
                                                                                     
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                                Advance warning of a mandatory height restriction ahead | Low bridge signs | Rectangular | Blue | White | 
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                                High vehicles to use middle of road at arch bridge ahead | Low bridge signs | Rectangular | White | Grey/Black | 
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                                Maximum headroom of 12'-6'' at arch bridge ahead | Low bridge signs | Triangular | White | Red | 
                                     | 
                            
                                                                            
                                                                                     
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                                Maximum headroom of 14′-6” at hazard ahead | Low bridge signs | Triangular | White | Red | 
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                                Maximum headroom of 3.8m at arch bridge ahead | Low bridge signs | Triangular | White | Red | 
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                                Maximum headroom of 4.4m at hazard ahead | Low bridge signs | Triangular | White | Red | 
                                     | 
                            
                                                                            
                                                                                     
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                                Reduced headroom over part of road due to overhanging building ahead | Low bridge signs | Rectangular | White | Grey/Black | 
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                                Vehicles exceeding 14′-6” in height prohibited | Low bridge signs | Circular | White | Red | 
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                                Vehicles exceeding height indicated are prohibited. Height is displayed in both metric and imperial units | Low bridge signs | Circular | White | Red | 
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