A vehicle scheduling method based on vehicle density and speed back‑pressure (BP) is proposed to alleviate traffic congestion in traffic network. Addressing the complexity and heterogeneity of vehicles, the calculation of the BP value is based on vehicle density on upstream and downstream roads, with maximum allowable speeds serving as weights. Then, the BP ratio is used to govern the number of vehicles allocated from the upstream fleet to the downstream road to balance the traffic flow. In addition, the shortest driving distance for the fleet is used as the optimization goal for individual vehicle routing to reduce the average travel distance. Simulation results show that the proposed method is more effective than other BP algorithm‑based dynamic vehicle routing methods in reducing queuing length and alleviating congestion, while decreasing the average travel distance and time for vehicles significantly.
尽管应用原始的背压策略可以在一定程度上减少道路上排队车辆的数量,但其所作的假设并不符合实际的交通网络状况.因此,文献[16]提出了一种基于拥塞识别改进的背压(modified back‑pressure with congestion identification,MBP+CI)路线规划方法.首先,道路ij的交通流量,车辆密度和速度之间的关系可以表示为
为了验证本文提出的基于密度和速度背压(density and velocity back‑pressure,DVBP)路线动态规划方法的有效性,对原始背压路线动态规划方法、基于拥塞感知背压的路线动态规划方法[16]和本文提出的方法进行了比较.并对平均排队车辆长度、平均行驶距离和平均行驶时间3种指标进行了分析.
WangS, DjahelS, ZhangZ H,et al.Next road rerouting:a multiagent system for mitigating unexpected urban traffic congestion[J].IEEE Transactions on Intelligent Transportation Systems,2016,17(10):2888-2899.
[2]
NagyG, SalhiS.Location‑routing:issues,models and methods[J].European Journal of Operational Research,2007,177(2):649-672.
[3]
Ben‑AkivaM E, GaoS, WeiZ,et al.A dynamic traffic assignment model for highly congested urban networks[J].Transportation Research Part C:Emerging Technologies,2012,24:62-82.
[4]
YuanC J, YuX X, LiD W,et al.Overall traffic mode prediction by VOMM approach and AR mining algorithm with large‑scale data[J].IEEE Transactions on Intelligent Transportation Systems,2018,20(4):1508-1516.
[5]
AnasA.The cost of congestion and the benefits of congestion pricing:a general equilibrium analysis[J].Transportation Research Part B:Methodological,2020,136:110-137.
[6]
ZhengL, LiuP J, HuangH M,et al.Time‑of‑day pricing for toll roads under traffic demand uncertainties:a distributionally robust simulation‑based optimization method[J].Transportation Research Part C:Emerging Technologies,2022,144:103894.
WanXin, GaoSheng‑xiang.Research on path optimization of internet of vehicle based on crowd sensing technology[J].Computer & Digital Engineering,2017,45(9):1765-1769.
[9]
TangC H, HuW B, HuS M,et al.Urban traffic route guidance method with high adaptive learning ability under diverse traffic scenarios[J].IEEE Transactions on Intelligent Transportation Systems,2020,22(5):2956-2968.
[10]
LazarD A, BıyıkE, SadighD,et al.Learning how to dynamically route autonomous vehicles on shared roads[J].Transportation Research Part C:Emerging Technologies,2021,130:103258.
[11]
LazarD A, CooganS, PedarsaniR.Routing for traffic networks with mixed autonomy[J].IEEE Transactions on Automatic Control,2020,66(6):2664-2676.
LiYan‑feng, GaoZi‑you, LiJun.Vehicle routing problem in dynamic urban network with real‑time traffic information[J].Systems Engineering—Theory & Practice,2013,33(7):1813-1819.
[14]
ZhuW L, ZhuC S, CaoY J,et al.An intelligent route guidance strategy based on congestion type for ITS[C]//IEEE International Conference on Communications.Seoul,2022:5047-5052.
[15]
PanJ, PopaI S, BorceaC.DIVERT:a distributed vehicular traffic re‑routing system for congestion avoidance[J].IEEE Transactions on Mobile Computing,2016,16(1):58-72.
[16]
ChowA H F, ShaR, LiY.Adaptive control strategies for urban network traffic via a decentralized approach with user‑optimal routing[J].IEEE Transactions on Intelligent Transportation Systems,2019,21(4):1697-1704.
[17]
ZaidiA A, KulcsarB, WymeerschH.Back‑pressure traffic signal control with fixed and adaptive routing for urban vehicular networks[J].IEEE Transactions on Intelligent Transportation Systems,2016,17(8):2134-2143.
[18]
ChenH Y, WuF, HouK Z,et al.Back pressure‑based distributed dynamic route control for connected and automated vehicles[J].IEEE Transactions on Intelligent Transportation Systems,2022,23(11):20953-20964.
[19]
VaraiyaP.Max pressure control of a network of signalized intersections[J].Transportation Research Part C:Emerging Technologies,2013,36:177-195.
[20]
LiL, JabariS E.Position weighted backpressure intersection control for urban networks[J].Transportation Research Part B:Methodological,2019,128:435-461.
[21]
WangX M, YinY F, FengY H,et al.Learning the max pressure control for urban traffic networks considering the phase switching loss[J].Transportation Research Part C:Emerging Technologies,2022,140: 103670.
[22]
LiuH, GayahV V.A novel max pressure algorithm based on traffic delay[J].Transportation Research Part C:Emerging Technologies,2022,143:103803.