重庆城市道路交叉口进口道通行能力调查研究

城市道路交叉口的通行能力是城市交通规划管理的基础参数。山地城市交叉口通行能力受多种因素影响,与平原区交叉口通行能力差别较大。通过分析交叉口通行能力的影响因素,选取具有代表性的交叉口,对其几何特征、交通特征进行观测,分析计算车头时距和启动延误数据,得到交叉口进口道的可能通行能力,发现山地城市交叉口一条进口道的可能通行能力比普通地区交叉口通行能力低200～400 PCU。

Investigation and Study on Traffic Capacity of Access at Crossings in Urban Roads of Chongqing

The traffic capacity at crossings of urban roads is a basic parameter in urban traffic planning and management.Affected by multiple factors,the traffic capacity at crossings of mountainous urban areas is quite different from those of plain areas.By analyzing the influencing factors for traffic capacity at crossings,this paper selects representative crossings and observes their geometrical characteristics and traffic features,analyzes and calculates time intervals between vehicle heads and startup delay data...