text: By controlling car usuage,the amount of traffic in cities,states,and countries can be controlled. Lessing car usage,makes traffic less ,espically in big cities. According to source 3 , rush-hour restrictions have dramatically cut traffic. Acccording to source 4,pedestrian,bicycleand public transportation traffic are woven into a connected network to save time,conserve resources,lower emisisons,and improve safety. With a controlled  quantity of traffic,less accidents and traffic jams will occur.