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Road markings and lines  
 

 
 

Single white line - edge of road

There can often be a little confusion as to exactly what the single white lines at the edge of the road mean in terms of stopping and parking and where they are typically located.

There are certain areas where parking on a single white line is in fact illegal and those that permitted.

If you are taking a driving test however, it is worth noting that a driving examiner will not try and 'trick' you into parking in an illegal area such as double yellow lines or single yellow lines during the times shown on the sign. Explained are the various types of single white lines found at the edge of the road, their meaning and if you can legally park on them.

Single white line
Single white line

Continuous single white line
A continuous single white line used at the edge of a carriageway, other than at junctions, exits from private drives and lay-bys. Used on the left-hand side of the road and alongside the central reservation of dual carriageway roads.
White carriageway  line raised ribs
White line raised ribs

Continuous single white line with raised ribs
Alternative edge of carriageway marking, with raised ribs to provide audible and tactile warnings when the line is being crossed. They are used on motorways and other roads with hard shoulders or hard marginal strips.
Egde of road white line
Edge of road line

Broken white line
Edge of main carriageway at a junction (particularly where a slip road leaves or
joins), at an exit from a private driveway or at a lay-by. Also used to divide the main carriageway from a traffic lane that leaves the main carriageway at a junction ahead (lane drop).
Edge of carriageway broken line
Edge of road line
Broken white line
Edge of main carriageway at a junction or at an exit from a private driveway. Used
in conjunction with "give way" markings on the side road.

 

Parking on single white lines

If the road has a continuous single white line running along the left side, parking is considered legal but in some cases may be used to discourage parking - though this is subject to localised laws such as no parking enforcement signs or other such prohibited parking markings. Other such issues could also raise potential legal issues such as parking in front or a dropped curb, private driveway, too close to a junction for example, but generally these are separate issues in their own right.

However, in certain cases the single white line represents that there is no pavement – if this is the case then it would be illegal to park on a single white line. Such locations can often be areas where no street lighting is available and the continuous white line is used to define the edge of the carriageway.