Greenwich

Road markings

Types of road marking

Road markings are a cost-effective way of reducing accidents. The three main types are listed below.

White carriageway markings

At junctions they indicate priorities, and as centre or lane lines they indicate the best line for vehicles to follow.

Lane arrows are used on approaches to traffic lights to show which lane to move into if you want to turn or carry on straight. 'SLOW' markings are often used on the approach to a hazard.

Areas of central cross hatching, or 'ghost island' markings, separate oncoming traffic, reducing traffic speed and providing safe right-turning areas. These, along with central traffic islands, play a major part in reducing motorcycle accidents.

Continuous white lines

Continuous white centre line markings must not be crossed and are used to prevent overtaking and reduce speeds on roads with poor visibility due to bends or hills. It is an offence to park in any section of road that is marked with a continuous white line. Such white lines may only be crossed by traffic that is turning right.

Yellow lines

You cannot park on a double yellow line, but you can park on a single yellow line outside of the times stated on signs situated either nearby the line or on a Controlled Parking Zone boundary sign.

Find out more about road markings (Gov.UK website)