ARCH BRIDGE High vehicles use middle of road' Supplementary Plate - Post Mount Diagram 531.2 R2/RA2
This permanent sign is used on the approach to a bridge where needed to indicate that tall vehicles should use the middle portion of the road. This sign should be used to accompany 531.1 to ensure that vehicles are adequately warned of the bridge.
This sign is available with different text heights (known as X heights). The height of the text required will depend on the speed of the road the sign is being used on. Please consult the chapter 4 traffic sign guidelines for more information, a link to these documents can be found on our regulations page. Changing the X height of the sign will have an impact on the overall size of this supplementary plate.