The invention discloses a road network dynamic traffic distribution method based on traffic flow prediction. According to the method, a dynamic traffic distribution problem comprises a plurality of equilong demand time periods, each time period is iteratively solved based on an MSA algorithm to meet a path flow # imgabs0 # meeting a dynamic user equilibrium criterion, and during each iteration, a current path flow f (k) is loaded to a model based on a traffic flow prediction model TP to obtain a prediction value, so that new road impedance is obtained; then, calculating a time-varying shortest path based on the new road impedance, and obtaining an alternative path flow rho (k) by adopting all-existence and all-nor distribution; and finally, updating the path flow based on a formula # imgabs1 #. The iteration process is repeated until algorithm convergence reaches dynamic user balance; the method is simple to implement, has better sensitivity to the road traffic capacity, and is more in line with the actual demand.
本发明公开一种基于交通流预测的路网动态交通分配方法。该方法将动态交通分配问题包含若干个等长的需求时段,各时段均基于MSA算法迭代求解满足动态用户均衡准则的路径流#imgabs0#每次迭代时,首先基于交通流预测模型TP将当前路径流f(k)加载至模型获取预测值,从而求得新的道路阻抗;然后,基于新的道路阻抗计算时变最短路径,采用全有全无分配得到备选路径流ρ(k);最后,基于公式#imgabs1#更新路径流;重复上述迭代过程直至算法收敛达到动态用户均衡;该方法实行较为简单,对于道路通行容量具有更好的灵敏性,更符合实际的需求。
Road network dynamic traffic distribution method based on traffic flow prediction
一种基于交通流预测的路网动态交通分配方法
2024-02-06
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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