A one-way street is a road where traffic is allowed to move in only one direction. This design helps to reduce congestion and improve safety by preventing vehicles from coming head-to-head. Signs and road markings indicate the direction of travel, ensuring that drivers know which way to go. One-way streets are commonly found in urban areas, where space is limited and traffic flow needs to be managed efficiently. They can also help facilitate public transportation, such as buses, by creating dedicated routes. Cities often use one-way streets to enhance pedestrian safety and improve the overall driving experience.