关于行车视距作为公路使用质量指标之浅识

On the Driving Sight Distance as the Quality Index of Highway Use

视距是驾驶员在公路上行驶的必要安全距离,将行车视距作为公路使用质量指标进行重要性阐述,明确停车视距在道路行驶过程中的重要性。引用合理的计算方法,结合规范要求分别针对各项影响因素进行数据对比,明确各种因素在停车视距中的影响程度。通过结论对比,发现对于视距的计算,不能单一地采用固定设计值,而应综合考虑设计时速、反应时间、摩阻系数、纵坡及其他因素的影响,在特殊路段分别对视距进行分析和计算,并在保证行车安全的情况下提出一些切实有效的针对性措施。

Sight distance is the necessary safe distance for drivers to travel on the road.The importance of driving sight distance as a quality index of road use has been expounded to further clarify the importance of parking sight distance in the road driving process.Referring to the reasonable calculation method and combining with the requirements of the code,the data of various influencing factors are compared to determine the influence of various factors in the parking sight distance.Through the comparison of conclusions,it is found that the calculation of sight distance cannot adopt a single and dogmatic fixed design value,but should comprehensively consider the influence of speed,reaction time,friction coefficient,longitudinal slope and some other factors.Separated analysis and calculation on sight distance should be conducted in special sections,and some practical and effectively targeted measures on ensuring driving safety are then put forward.