Abstract: Now the world is in a message age, and the computer is the best assistant to transmit messages. It has been proved that the computer has become a powerful tool for building control system of urban transportation. From two sides, i. e. computer technology and automatic control technology of urban transportation, this paper discusses the impact of the computer on the control of the system of urban transportation.

Key words: effectiveness of travel distance, reliability, centralized control, distributed-control, spatial extension, plurality

摘要： 当今世界进入了信息时代,计算机正是传递信息的最好帮手。世界各国的发展证明,迅猛发展的计算机已成为城市交通控制系统的有力工具。本文从计算机技术和城市交通自动控制技术的发展两个方面,讨论了计算机对城市交通控制系统的影响。

关键词: 行程利用率, 可靠性, 集中式控制, 分布式控制, 空间延伸性, 多元性