Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (5): 1478-1483.doi: 10.13229/j.cnki.jdxbgxb20180376

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Dynamic partitioning method for road network intersection considering multiple factors

Da-yi QU(),Yan-feng JIA,Dong-mei LIU,Jing-ru YANG,Wu-lin WANG   

  1. College of Automobile and Transportation, Qingdao University of Technology, Qingdao 266520, China
  • Received:2018-04-20 Online:2019-09-01 Published:2019-09-11

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Abstract:

Based on the original path correlation model, considering the discrete vehicle, block and spatial characteristics of local traffic flow, path correlation model between adjacent crosses is established. This model compensates the shortcoming of the original model, which only considers a single index. Based on the calculation results of the path correlation model, signal control intersection groups are dynamically divided using the hierarchical clustering method. Case analysis and simulation results show that the new model of intersection group dynamic division based on signal control protocol can improve the regional Regulation efficiency.

Key words: traffic information engineering and control, intersection group, correlation degree, discrepancy, block ability, dynamic OD path

CLC Number: 

  • U491

Fig.1

Influence of path length and green letter ratio on discrete index"

Fig.2

Schematic diagram of upstream functional area at intersection"

Fig.3

Effect of intersection spacing and saturation on block index"

Fig.4

Schematic diagram of path"

Fig.5

Schematic diagram of regional road network"

Table 1

channelization forms and steering flow at each intersection"

路口 车道属性 流量/（veh·h-1） 路口 车道属性 流量/（veh·h-1） 路口 车道属性 流量/（veh·h-1）
左转L 直行T 右转R 左转L 直行T 右转R 左转L 直行T 右转R
AW 左+右 372 — 262 CS 左+直+直右 200 1289 223 FE 左+直+右 198 340 670
AS 左+直+直 186 1775 — CN 左+直+直右 220 920 137 FW 左+直+右 280 300 195
AN 直+直+右 — 764 243 DE 左+直+直右 221 720 176 FS 左+直+直右 248 450 202
BE 直左+直右 149 224 168 DW 左+直+直右 256 960 160 FN 左+直+右 199 320 179
BW 直左+直右 136 256 124 DS 直左+直右 146 252 160 GE 左+直+直右 103 498 224
BS 左+直+直右 103 1576 190 EE 左+直+右 165 202 220 GW 左+直+右 133 288 168
BN 左+直+直右 201 832 219 EW 左+左+直右 1203 198 124 GS 左+直左+右 455 221 200
CE 直左+直右 168 241 147 ES 左+直+直右 212 432 189 GN 左+直+右 179 250 248
CW 直左+直右 170 276 156 EN 左+直+直右 249 389 143

Table 2

Path correlation value"

序号 路径编号 I ' 1 I ' 2 I ' 3 I
1 DWT-EWL 0.73 0.64 0.71 2.08
2 EWL-BST 0.66 0.43 0.88 1.97
3 BST-AST 0.58 0.54 0.79 1.91
4 GSL-FER 0.55 0.52 0.79 1.86
5 FER-CST 0.66 0.52 0.65 1.83
6 EST-BST 0.54 0.51 0.52 1.57
7 EWT-FWT 0.52 0.48 0.47 1.47
8 FST-CST 0.42 0.45 0.51 1.38
9 GET-FET 0.44 0.39 0.38 1.21
10 BWT-CWT 0.39 0.22 0.31 0.92

Fig.6

Sketch map of intersection group division"

Fig.7

Schematic diagram of intersection of main path coordinate direction"

Fig.8

Comparison of traffic operation benefit indexes"

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