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为了降低传统交叉口左转车流对通行能力产生的影响,给解决交叉口运行效率低的问题提供新的思路,考虑连续流交叉口和上游信号交叉口两种非传统交叉口几何上的相似性,通过0-1变量建立了统一的线性规划模型。该模型同时考虑信号配时和车道分配,通过优化信号配时和车道分配方案提高交叉口的通行能力。给出了优化过程及结果,并在需求对称和不对称两种情况下对其进行了灵敏度分析。结果表明:不论需求对称与否,非传统交叉口均能明显提高交叉口的通行能力。
In order to reduce the impact of left-turn traffic flow on traffic capacity at traditional intersections and to provide a new way to solve the problem of low efficiency at intersections, the geometrical similarities between two non-traditional intersections at continuous flow and upstream signalized intersections , Through the 0-1 variable to establish a unified linear programming model. The model considers both signal timing and lane allocation, and improves the capacity of intersections by optimizing signal timing and lane allocation schemes. The optimization process and the result are given, and the sensitivity analysis is carried out under the condition of symmetry and asymmetry. The results show that irrespective of demand symmetry or not, non-traditional intersections can significantly improve the capacity of intersections.