吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1703-1709.doi: 10.13229/j.cnki.jdxbgxb201706005

• Orginal Article • Previous Articles     Next Articles

Full velocity difference model based on dynamic reaction time

SONG Xian-min, DENG Xiao-lei, GAO Ming, QU Zhao-wei   

  1. College of Transportation, Jilin University, Changchun 130022, China
  • Received:2016-10-13 Online:2017-11-20 Published:2017-11-20

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Abstract: In order to describe car following behavior in real road traffic, the car following status is divided into strong car-following, weak car-following and free travel sub-status. Considering the difference of driver reaction time in different space headways, a space sensitivity and velocity difference functions, and a full velocity difference model based dynamic reaction time (DRVM) is established. The stability condition of this model is obtained by using linear stability theory. Three experiences, vehicle acceleration, vehicle emergency deceleration and change of traffic state from free flow to congestion, are simulated in MATLAB. Compared with Optimal Velocity Model (OVM) and Full Velocity Difference Model (FVDM), simulation results show that the starting lag time of DRVM is 1.5 s, the speed of congestion spreading is 17.76 km/h, and the deceleration performance is improved by 25% compared with that of FVDM. The DRVM can be accord with the actual situation and close to stable traffic flow.

Key words: engineering of communication and transportation, reaction time, car-following model, traffic simulation

CLC Number: 

  • U491
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