divided highway
From Longman Dictionary of Contemporary EnglishRelated topics: Roadsdivided highwaydiˌvided ˈhighway noun [countable] TTR American English a main road with two lines of traffic travelling in each direction, separated by a piece of land SYN dual carriageway British EnglishExamples from the Corpusdivided highway• The road was mostly two-lane blacktop, but there were sections of divided highway, too.