The portion of road used by vehicles. Includes the shoulders and auxiliary lanes.
A route for vehicles of all descriptions. Public carriageway is the highest of the three statuses of Rights of Way. Horse-riders and walkers may also use (almost) all carriageways.
A way comprised in a highway, being a way (other than a cycle track) over which the public have a right for the passage of vehicles. [HA80 s329
A carriageway is a part of a road referring to the part that will technically carry the traffic.