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如今我国城市经济的快速发展,人们生活水平得以提高,汽车的拥有数量也是逐年增加,导致交通拥堵是我国普遍存在的一种现象,这给我国城市的建设提出新的挑战。现今长距离、快速通行的城市快速道路起到了很好的作用,同时也缓解了交通拥堵的现状问题。但是,目前我国快速道路的发展并不理想,某些已建成并投入使用的快速路同样存在一些问题,其主要体现在出入口位置的设置方面,仍然存在着车辆分流、合流的交织导致拥堵,车流运行缓慢等,这也成为了城市快速路系统的瓶颈路段,严重影响了整体效用的发挥。通常快速路的出入口衔接着快速路与其它等级的道路,使快速路与其它等级道路之间形成互转、集散的目的。基于此,在整个城市道路网系统中有着至关重要的作用。如何设计好快速路出入口,提高快速路服务水平,有效缩短出行时间,真正实现快速路系统的通行效率是当前亟需解决的重大课题。
Nowadays, with the rapid development of urban economy in our country, people’s living standards have been improved and the number of cars has also increased year by year. As a result, traffic congestion is a common phenomenon in our country and this poses new challenges for the construction of our cities. Today’s long-distance, fast-moving urban expressway has played a very good role, but also ease the traffic congestion problem. However, at present, the development of expressways in our country is not satisfactory. Some expressways that have been completed and put into operation also present some problems. The main problems are the entrance and exit location settings, the diversion of vehicles, congestion and traffic flow Slow operation, which has also become the bottleneck of the urban expressway system, seriously affecting the overall effectiveness of the play. Usually the entrance of the expressway is connected with the expressway and other grades of roads, so that the interchange between the expressway and other classes of roads and the purpose of distribution are formed. Based on this, it plays a crucial role in the entire urban road network system. How to design expressway entrances and exits, improve the service level of expressways, and effectively shorten the travel time, it is a major issue urgently needed to solve the problem of truly realizing the efficiency of expressway systems.