Fourlanes are a common sight in cities and highways around the world. However, sometimes it can be helpful to have varying words to describe these four-lane roads. Some synonyms for fourlanes include expressways, highways, freeways, motorways, dual carriageways, and divided highways. Each of these terms is used interchangeably depending on the country and region. Expressways and freeways are common in the United States, with motorways and dual carriageways used in Europe and the United Kingdom. Governments might opt for the use of these words to make the public aware of road situations that require attention. The synonyms of fourlanes are incredibly useful in avoiding redundancy in writing and speech.