1. A traffic management system in which one or more lanes of a road are temporarily reversed to flow in the opposite direction, typically to handle congestion or construction.
Usage: chiefly British; plural form; singular is contraflow; commonly used in transportation and traffic engineering contexts

Examples

• The highway implemented contraflows during rush hour to improve traffic flow.
• Contraflows were set up on the motorway to accommodate roadwork on one side.
• Drivers must pay close attention to contraflows, as the direction of traffic can change.
• The city used contraflows to manage congestion during the major event.
• Contraflows require clear signage and lane markings to ensure driver safety.