1. A major road or expressway with heavy traffic flow, experiencing delays and slow movement of vehicles
The congested highway made my commute take twice as long.
A rodovia congestionada fez meu trajeto levar o dobro do tempo.
2. A highway that is blocked or overcrowded with vehicles, reducing traffic flow efficiency
During rush hour, every congested highway in the city becomes a parking lot.
Durante a hora do rush, toda rodovia congestionada na cidade vira um estacionamento.