基于货客车最高车速与道路发展相适应问题的探讨(续2)

A Thinking of the Adaptability between Truck and Bus Maximum Speed and the Road Development

4．3动力问题 提高最高设计车速是货客车高速化设计的一项主要内容。传统设计是将最高车速作为动力性的一项指标．提高车速就是提高发动机的动力或调整传动系速比，或两项均用。

This article started from the overall of the road traffic system, in view of the present situation of highway transportation,pointed out the shortage of the truck and bus design in satisfying the drive request on highway,discussed the related issues of truck and bus high-speed design, and finally brought out some ponder suggestion for the design and development.