Slow Moving Vehicles on Incline Ahead Permanent UK Road Sign
- Post Mountable with 2 fixing rails
- Class 2 R2/RA2 Reflective
- Available in 450mm, 600mm, 750mm, 900mm Tri
Diagram 583 is a common sign used before the start of a steep incline where larger vehicles or lorries have to use a low / slow gear choice to reach the top of the incline.
Material: R2/RA2 reflective overlay on aluminium composite backing
Fixing Method: 2 fixing rails for post mounting
Reflectivity: Class 2 R2/RA2
As per the UK Highways Traffic Sign Manual Chapter 4 - Warning Signs page: 75 The following advice is given:
19.2.1. The slow?moving vehicles signs, diagram 583 (S2?2?49, see Figure 19-2) and the associated plate “Slow lorries for” a distance (S2?2?49, see Figure 19-3), are intended for use on roads where the gradient is such as to have an adverse effect on the speed of heavy commercial vehicles, thereby causing a potential hazard to other vehicles in the same lane. This is not simply a question of congestion. The problem can occur even when there is more than one lane. At times of light traffic flow, a vehicle being driven in the left hand lane at 70 mph might close unexpectedly rapidly on a slow?moving lorry, or on a queue of vehicles waiting to pass it.
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