Specifications

What you need to do
Use only equipment of a type approved (a legal requirement) – see page 3.
All equipment on site can have problems, particularly from accidental and vandal damage.
Maintenance contact information is therefore essential and should be readily available – for example,
prominently displayed on the equipment.
Test the equipment before setting up – see pages 14 to 16.
Set up the signing and equipment correctly – see pages 11 to 16.
Use the ‘VA’ setting on the controller.
Align the MVDs carefully at each end of the site – see page 14. Remember, MVDs cannot see around
corners, parked vehicles, plant or materials! Neither can they work properly if they are: pointing at
the sky – or over a hedge, not facing oncoming traffic, or damaged by being roughly treated, for
example thrown onto the back of a lorry.
Use the correct All-Red and Maximum Green settings (see pages 7 to 10).
If there is a photocell fitted, ensure it is not going to be overshadowed by, say, a tree canopy.
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