ADJ
dual, single | northbound, etc.
PREP
on a/the ~
Traffic was moving slowly on the carriageway due to roadworks near the town centre.
noun
The part of a road that carries traffic.
One side of a dual carriageway that carries traffic in a single direction.
The carriageway was reduced to one lane.
The car came off the carriageway, due to icy conditions on the road.
A lorry has jackknifed on the dual carriageway.
Overtaking is simpler on a dual carriageway.
This carriageway is broken up into three lanes.
Thames Street is as narrow now as it was one hundred and fifty years ago, when it was a carriageway that led to the stables of Etienne De Lancey.
i Register
In some senses, carriageway is marked as UK. Watch for register when choosing this word.