These five colours are: red, green, blue, white and amber. The colours of the reflective studs serve a genuine purpose - and can really help you out when visibility is poor on unlit sections or ...

Standard reflective road studs rely on illumination from the headlight beams of the approaching vehicle and are effective to a distance of up to 90 meters, a situation that is being greatly ...

The LEDs can be seen from as far away as 1,000 yards, which is ten times further than the traditional reflective studs, and are seen as a much better alternative for drivers motoring in bad weather.