Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (2): 541-548.doi: 10.13229/j.cnki.jdxbgxb20191126

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Double⁃ring adaptive control model of intersection during intelligent and connected environment

Jian ZHANG1,2,3,4(),Kun-run WU1,2,3,Min YANG1,2,3,Bin RAN1,2,3   

  1. 1.Jiangsu Key Laboratory of Urban ITS,Southeast University,Nanjing 210096,China
    2.Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies,Nanjing 210096,China
    3.Jiangsu Province Collaborative Innovation Center for Technology and Application of Internet of Things,Nanjing 210096,China
    4.School of Engineering,Tibet University,Lhasa 850000,China
  • Received:2019-12-11 Online:2021-03-01 Published:2021-02-09

Abstract:

The paper proposed a double-ring adaptive signal control method for intersection in intelligent and connected environment. First, Connected and Automated Vehicles (CAV) are modeled by Intelligent Driver Model (IDM) while human-driven vehicles are calibrated by the Wiedemann model. Then, running delay and vehicle stops are chosen as optimization targets considering the minimal constraint of green time. The signal timing optimization utilizes the double ring structure NEMA phases group as the variant. A micro-scope traffic simulation platform based on VISSIM was implemented. Simulation experimental results indicate that compared with single-ring fixed control method, double-ring adaptive control method reduces delay by 7.9%~17.7% and vehicle stops by 7.3%~17.0%. In the networked environment, the optimization effect of double-ring adaptive control method increases with the increase of saturation and the penetration rate of networked vehicles.

Key words: engineering of transportation system, intelligent transportation systems, intelligent and connected, intersection, signal control

CLC Number: 

  • U491

Fig.1

Basic scenario"

Fig.2

Six phases NEMA double controlling structure"

Table 1

Phase sequence on double controlling structure"

相位组组合方式第一相位组第二相位组第三相位组
第一环①相位组1→相位组2(a)→相位组3东西左转东进口道直左东西直行
②相位组1→相位组2(b)→相位组3东西左转东进口道直左东西直行
③相位组1→相位组3东西左转东西直行
第二环①相位组4→相位组5(a)→相位组6南北左转南进口道直左南北直行
②相位组4→相位组5(b)→相位组6南北左转北进口道直左南北直行
③相位组4→相位组6南北左转南北直行

Fig.3

Flow chart of optimization of isolated intersection with intelligent and connected environment"

Fig.4

Trajectory of vehicle when current signal is green"

Fig.5

Trajectory of vehicle when current signal is red"

Fig.6

Structure flow diagram of simulation platform"

Table 2

Parameter values of IDM model"

变量数值变量数值
am/(m·s-21.0T/s0.85
bm/(m·s-2-8.0tα/s0.5
v0/(km·h-1120b/(m·s-2-2.8

Fig.7

Database interface of vehicles simulation platform with intelligent and connected environment"

Fig.8

Optimize effect of single ring and double ring control method on V/C=0.5"

Fig.9

Optimize effect of single ring and double ring control method on V/C=0.75"

Fig.10

Optimize effect of single ring and double ring control method on V/C=1"

Fig.11

Delay range comparison among approaches on V/C=1.0"

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