高速公路中分带设计是高速公路设计中的主要组成部分,对保证路面行车安全,减少逆向车辆产生眩光,发挥其功能的重要作用。随着社会经济的发展与交通量的迅猛增长,越来越多的高速公路由于规划、设计、施工等各方面的局限性暴露出相当多的问题,需要进行道路技术改造或改扩建原有道路,提高其等级,从而使其发挥应有或更大的作用。中分带排水设计应根据当地气候条件、交通车辆通行增长情况、 Freeway zoning design is the main part of highway design, to ensure the safety of road traffic, reduce the glare of reverse vehicles, to play an important role in its function. With the development of society and economy and the rapid growth of traffic volume, more and more highways have exposed quite a few problems due to the limitations of planning, design and construction, and they need to carry out technological transformation of roads or reconstruction of existing roads , Improve their rank, so that they play their due or greater role. Divisional drainage design should be based on local climatic conditions, the growth of traffic vehicles,