1) Road infrastructure 2) Roadway 
A carriageway (North American English: roadway, informally direction, side and lanes, improperly the singular lane) consists of a width of road on which a vehicle is not restricted by any physical barriers or separation to move laterally. A carriageway generally consists of a number of traffic lanes together with any associated shoulder, but may b...
[n] - (British) one of the two sides of a motorway where traffic travels in one direction only usually in two or three lanes
noun one of the two sides of a motorway where traffic travels in one direction only usually in two or three lanes