Modeling and Analysis of Hybrid Traffic Flow Considering Actual Behavior of Platoon

doi:10.16182/j.issn1004731x.joss.22-1510

Abstract

Abstract:

To explore the effect of actual behavior of autonomous vehicular platoon on traffic flow, aiming at the hybrid traffic flow mixed with predecessor following(PF) platoon which is modeled according to the actual control strategy, a hybrid traffic flow model is established based on cellular automata(CA) modeling method. Simulation analysis shows that the effect of platoon characteristics such as time headway, market penetration, platoon size, and control gains on hybrid traffic flow presents coupling and nonlinear properties. The spatiotemporal behavior of hybrid traffic flow with different platoon characteristics is generally much different. Reducing time headway or increasing platoon market penetration is generally beneficial to enhance road capacity. The consistent laws of the effect of platoon size and control gains on traffic flow are not obvious, which must be combined with other platoon characteristics to carry out the analysis.

Key words: intelligent transportation, vehicular platoon, cellular automata, hybrid traffic flow, predecessor following

CLC Number:

TP391.9

Wang Xi, Yang Xiujian, Jia Xiaohan, Wang Shenyi. Modeling and Analysis of Hybrid Traffic Flow Considering Actual Behavior of Platoon[J]. Journal of System Simulation, 2024, 36(4): 929-940.

Figures/Tables 13

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Fig. 2

Table 1

Value for parameters in simulation

参数	取值
仿真时长/s	1 000
人工驾驶车辆最大加、减速度 $a c a r$ /(m/s²)	6
人工驾驶车辆限速值 $v c, m a x$ /(m/s)	33
车辆车身长度 $L c a r$ /m	5
队列车辆反应时间 $τ i P l a t o o n / s$	1
人工驾驶车辆常规加速度 $a i - k$ /(m/s²)	6
步长/s	1
人工驾驶车辆随机慢化概率P_slow	0.3
队列车辆限速值 $v p, m a x$ /(m/s)	33
安全保护距离d_gs/m	2
人工驾驶车辆反应时间 $τ i H D V / s$	2
人工驾驶车辆随机慢化减速度 $b i - k /$ (m/s²)	6

Table 1

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