n. 1. Divided highway.

a highway divided down the middle by a barrier that separates traffic going in different directions; "in England they call a divided highway a dual carriageway"

a minor road here as most roads are three lanes wide with a 'spare' lane for slow coaches to browse the shops from the outside

a multi-lane road with a median strip separating opposing traffic

a road consisting of two parts, separated by a central reservation, each part of the road being used by traffic travelling in one direction only

a road or highway with a central barrier or strip of land, known as a central reservation or median, separating the two directions of traffic

a road part of which consists of a central reservation that separates a carriageway to be used by vehicles proceeding in one direction from a carriageway to be used by vehicles in the opposite direction

Divided highway (4 lanes)

A dual carriageway or divided highway is a road or highway in which the two directions of traffic are separated by a central barrier or strip of land, known as a central reservation or median.