Part 1 of Essay
As the population of the United States dramatically increases and the number of vehicles on the nation's roads and highways skyrockets, new methods of traffic control and organization have become necessary, by utilizing new methods of transportation or by revising the current system. In the past 15 years, the number of ve ....

Part 2 of Essay
.... of traffic control need revision. Traffic jams, along with broken cars and the lack of alternate routes, account for one half of the traffic congestion in the United States (Clark 387-404). Although the number of traffic accidents in the United States has slowly decreased over the past several years, it is still alarmingly high. In 1990, approximately 7 deaths occurred for every 10,000 people in the United States due to traffic accidents (Wallich 14). In addition, traffic jams also demonstrate the need for bett ....