论文部分内容阅读
考虑了道路等级、交通流量与道路运行状态等静态因素,以及信息叠加特征的动态因素;提出了一种考虑路段属性的城市可变信息标识(VMS)选址算法,运用回溯法的思想,针对与交通诱导密切相关的4个主要路段属性,包括道路等级、交通流量、布设效果与信息叠加度,对路段进行多层次筛选;引入2个参数,分别为路段交通流量和布设效果的遍历范围,通过调整这2个参数,控制不同属性之间的重要程度;基于北京市某局部路网对算法进行了验证。验证结果表明:当这2个引入参数由0.3增大到0.6时,布设路段顺序会发生改变,等级较高的路段即使交通流量较小也会得到优先布设,处于同一交通流量区间的路段,布设效果大的路段优先布设;在实际应用中,如果要求VMS多布设在等级较高的路段上,可以通过调整算法参数而进行布设顺序的调整。
Considering the static factors such as the road grade, the traffic flow and the running status of the road, and the dynamic factors of the information superposition characteristics, a city variable information identification (VMS) location algorithm considering the attributes of road segments is proposed. By using the idea of backtracking method, The four main road segments which are closely related to traffic inducement include road grade, traffic flow, layout effect and information superposition degree, and multi-level screening of road sections. Two parameters are introduced, which are traversal range of road traffic flow and layout effect, By adjusting these two parameters, the importance of different attributes is controlled. The algorithm is validated based on a local road network in Beijing. The verification results show that when the two parameters are increased from 0.3 to 0.6, the order of the road sections will change. The higher level road sections will be preferentially laid out even if the traffic flow is small, and the road sections located in the same traffic flow range will be laid out In practical applications, if more VMSs are required to be deployed on higher-grade sections, the arrangement order of the parameters can be adjusted by adjusting the algorithm parameters.