130. Lines and lane markings on the road - General
Areas of white diagonal stripes or chevrons painted on the road. These are to separate traffic lanes or to protect traffic turning right. if the area is bordered by a broken white line, you should not enter the area unless it is necessary and you can see that it is safe to do so if the area is marked with chevrons and bordered by solid white lines you MUST NOT enter it except in an emergency
131. Lines and lane markings on the road - General
These are short, broken white lines which are used on wide carriageways to divide them into lanes. You should keep between them.
132. Lines and lane markings on the road - General
Reflective road studs may be used with white lines.white studs mark the lanes or the middle of the road red studs mark the left edge of the road amber studs mark the central reservation of a dual carriageway or motorway green studs mark the edge of the main carriageway at lay-bys and slip roads green/yellow studs indicate temporary adjustments to lane layouts, e.g. where road works are taking place