clearway

[Melvinutino]

a road on which you are not allowed to stop (unless you have a breakdown)

[Becky]

A clearway is an area or stretch of road where stopping and parking is strictly prohibited, usually to keep traffic flowing smoothly. This includes not only the roadside itself, but also the adjacent footpaths and verges. Exceptions might be made for emergency vehicles or with special permissions. The use of clearways is common in busy areas or during peak traffic hours. They are usually marked with appropriate signs.

[Jacobanade]

The term clearway is used in several commonwealth countries to refer to stretches of road or street where parking is limited or prohibited.

[EdwardyHuche]

A road or other path that is kept free of obstructions, or on which stopping is strictly regulated, in order to maintain free flow of movement.