A controlled-access highway is a type of road that limits the points where vehicles can enter or exit, typically through ramps or designated interchanges. This design helps maintain a smooth flow of traffic by preventing frequent stops and turns from local roads. Controlled-access highways are often used for long-distance travel and are designed for higher speeds and heavier traffic, as they minimize interruptions and reduce the risk of accidents. They are common in urban and rural areas, especially for major roads, expressways, or freeways.

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