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一、购物出行的时间分布对城市交通的影响及其机制城市交通系统存在空间和时间分布的两种非均衡状态。交通流量在空间上的非均衡使得原有道路系统的超负荷突出地表现为一些主要路段和交叉路口的超负荷,而时间上的非均衡又使得交通流量过于集中在早、晚两个高峰期。两种非均衡迭加在一起,造成高峰期主要路段、路口的拥挤、阻塞,是城
First, the time distribution of shopping trips on the impact of urban transport and its mechanisms There are two kinds of unbalanced spatial and temporal distributions of urban transport systems. The spatial heterogeneity of traffic flow makes the overloading of the existing road system highlight the overload of some major road sections and intersections, and the imbalance of time makes the traffic flow too concentrated in the early and late two peak periods . Two kinds of non-equilibrium superimposed together, resulting in the peak of the main roads, intersection congestion, congestion, is the city