These five colours are: red, green, blue, white and amber. The colours of the reflective studs ... a motorway, while blue is used for emergency services. As well as the visual cue the lights ...

Road studs which change colour with traffic lights are being installed to cut accidents at one of England's busiest motorway junctions. Switch Island on Merseyside has seen 49 crashes in two years ...

A number of UK roads are lookin' a lot brighter now, and it's all thanks to the SolarLite smart stud. Produced and marketed ... all day and then emitting light from dust 'til dawn in order to ...

New LED road studs have been installed at one of the UK’s busiest motorway junctions. Highways England fitted 175 of the lights – visible from 900 metres away – at the Switch Island motorway ...