Vehicle x must keep to the left of the continous line between points a and b. Vehicle y must keep to the left of the continous line between points b and a

Vehicle x must keep to the left of the continous line between points a and d but after point d it may cross both the broken and continous lines if the driver is satisfied that it is safe to do so. Vehicle y must keep to the left of the continous line between points b and c but after point c it may cross both the broken and continous lines if the driver is satisfied that it is safe to do so

Double prohibition line no vehicle may at any time be driven on the right hand side of this lane

Pedestrian crossing pattern at points other than road intersection - alternate black and white stripes

Direction arrows used in conjuction with prohibition lines have a regulatory effect

Example : Edge of a carriageway line - No motor vehicle shall cross or straddle the yellow line except in order to overtake traffic which is turning to the right