为了科学、合理地确定高速公路限速值,避免通常情况下现有道路限速过低、限速不合理等引起社会矛盾的问题,特针对广西都南高速公路限速标志和运行现状,应用广西高等级公路设计速度和运行速度控制研究成果和高速公路限速值设计方法理论,结合运行速度、高速公路线形、设计速度和交通安全等因素,合理、科学的确定高速公路限速值,论证合理的限速设置。 In order to scientifically and reasonably determine the speed limit of the expressway and avoid the problems of social conflicts such as the low speed limit of the existing roads and the unreasonable speed limit of the existing roads and the like, aiming at the speed limit signs and running status of Guangxi Duongnan Expressway, Based on the research results on the design speed and speed control of high-grade highways in Guangxi and the theory of design method of expressway speed limit, the speed limit of expressway is reasonably and scientifically determined in combination with the factors such as running speed, expressway alignment, design speed and traffic safety. Reasonable speed limit settings.