行车速度与行车耗油量是评价公路线形质量的两个重要指标。本文结合我国实际,提出了确定这两个指标的方法,还列举了实例。并运用此法进行公路路线设计方案的比较、研究路线平纵面线形设计是否协调、检查所设计的路线有无因行车速度变化剧烈而导致交通事故等,具有显著的技术经济效益。 Driving speed and driving fuel consumption are two important indicators to evaluate the quality of highway alignment. Based on the reality of our country, this paper puts forward the method of determining these two indicators and also gives examples. And this method is used to compare highway route design schemes, to study whether the line alignment of the alignment plane is in harmony and to check whether there is any significant technical and economic benefits due to the drastic change of traffic speed caused by the designed route.