在我国,不少城市在早期的开发建设中,由于受城市规划或地形等的限制,形成了不规则的交叉口。这些交叉口在交通流量不大的情况下,尚可正常地实现交通功能,但随着城市的发展、交通流量的持续增长,不规则交叉口往往会导致通行能力严重降低, 甚至成为影响整个路网通行能力的瓶颈。要解决这类交叉口的问题,如果运用常规的处理方式,往往效果不尽如人意。本文结合中环线改造中遇到的大柏 In our country, many cities in the early development and construction, due to restrictions on urban planning or terrain, formed an irregular intersection. However, with the development of cities and continuous increase of traffic volume, irregular intersections often lead to a serious decrease of traffic capacity and even affect the whole road Net capacity of the bottleneck. To solve this type of intersection problems, if the use of conventional treatment methods, often less than satisfactory results. This article combines the transformation of the Central line encountered in the cypress