Interpretation of Traffic Flow Breakdown with Density-Flow Model
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摘要: 用密度-流量关系模型解释交通流量陡降现象.为了解释交通流量陡降现象,提取了车头间距和驾驶员反应时间等驾驶行为共性参数.利用这些共性参数,建立了车流-回波速度、速度-密度和密度-流量关系模型.根据驾驶员在加速和减速时反应时间,计算了回波速度和密度-流量关系.计算结果表明,随驾驶员反应时间减少,回波速度峰值减小,流量峰值增大.驾驶员反应时间的变化是产生流量陡降现象的根本原因.Abstract: To interpret the phenomena of traffic flow breakdown,common parameters of driving behaviors,such as headways and drivers’ reaction time,etc.,were analyzed.Models were derived to describe the relationships between flow and wave speed,speed and density,and density and flow.The curves for the relationships were obtained under different reaction time of different drivers during acceleration or deceleration.The simulated results indicate that the maximum wave speed decreases and the peak flow value increases with a decrease in reaction time of drivers,and that the change in reaction time is the essential cause of traffic flow breakdown.
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Key words:
- density /
- flow /
- traffic flow breakdown /
- car-following model /
- wave speed /
- driving behavior
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王欣,李文权,王炜.基于驾驶行为共性的回波速度解释及仿真[J].东南大学学报,2007,37(4):691-694.WANG Xin,U Wenquan,WANG Wei.Interpreting and emulating echo wave speed based on common characteristics of driving behavior[J].Journal of Southeast University,2007,37(4):691-494.[2] ZHANG H M.Driver memory,traffic viscosity and a viscous vehicular traffic flow model[J].Transportation Research,Part B,2003,37(1):27-41.[3] ZHANG H M,KIM T.A car-following theory for muhiphase vehicular traffic flow[J].Transportation Research,Part B,2005,39 (5):385-399.[4] NAGATANI T.Traffic behavior in a mixture of different vehicles[J].Physica A,2000,284:405-420.[5] NAGATANI T.Multiple jamming transitions in traffic flow[J].Physica A,2000,290:501-511.[6] NAGAI R,ONOUCHI T,NAGATANI T.Phase separation and evolution of one pulse jam in traffic[J].Physica A,2005,354:571-581.[7] KERNER B S.Synchronized flow as a new traffic phase and related problems for traffic flow modeling[J].Mathematical and Computer Modelling,2002,35:481-508.[8] KERNER B S,KLENOV S L.Prebabilistic breakdown phenomenon at on-ramp bottlenecks in threo-phase traffic theory:congestion nucleation in spatially non-homogeneous traffic[J].Physica A,2006,364:473-492.[9] HELBING D,HENNECKE A,SHVETSOV V,et aLl.Macroscopic traffic simulation based on a gas-kinetic,non-local traffic model[J].Transportation Research,Part B,2001,35 (2):183-211.[10] LEVINEE,ZIV G,GRAY L,et al.Traffic jams and ordering far from thermal equilibrium[J].Physica A,2004,340:636-646[11] NAGEL K.Particle hopping models and traffic flow theories[J].Physical Review E,1996,53 (5):4655-4672.[12] SIMON P M,NAGEL K.Simplified cellular automaton model for city traffic[J].Physical Review E,1998,58 (2):1 286-1 295.[13] NING Wu.A new approach for modeling of Fundamental Diagrams[J].Transportation Research,Part A,2002,36 (10):867-884.[14] CASTILLO J M Del,BENITEZ F G.On the functional form of the speed-density relationship-Ⅰ:general theory[J].Transportation Research,Part B,1995,29(5):373-389.[15] CASTILLO J M Del,BENITEZ F G.On the functional form of the speod-density relationship-Ⅱ:empirical investigation[J].Transportation Research,Part B,1995,29(5):391-406.[16] EDIE L C.Car following and steady-state theory for non-congested traffic[J].Operations Research,1961,9(1):66-76.[17] FORBES T W.Human factor considerations in traffic flow theory[J].Highway Research Record,1963,15:60-66.[18] BANDO M,HASEBE K,NAKANISHI K,et al.Analysis of optimal velocity model with explicit delay[J].Physical Review E,1998,58 (5):5429-5435[19] DAVIS L C.Comment on analysis of optimal velocity model with explicit delay[J].Physical Review E,2002,66 (3):038101-1-038101-2.[20] DAVIS L C.Modifications of the optimal velocity traffic model to include delay due to driver[J].Physica A,2003,319:557-567.[21] TREIBER M,KESTING A,HELBING D.Delays,inaccuracies and anticipation in microscopic traffic models[J].Physica A,2006,360:71-88[22] GIPPS P G.A behavioral car following model for computer simulation[J].Transportation Research B,1981,15(2):105-111.[23] BRACKSTONE M,SULTAN B,MCDONALD M.Motorway driver behaviour:studies on car following[J].Transportation Research,Part F,2002,5 (1):31-46.
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