carriageway noun definition in Types of road topic from the Oxford Advanced Learner's Dictionary

carriageway

 noun: Types of road topic
1 one of the two sides of a motorway or other large road, used by traffic moving in the same direction the eastbound carriageway of the M502 the part of a road intended for vehicles, not people walking, etc. Vehicles should be parked as close as possible to the edge of the carriageway.