Journal of Jilin University(Engineering and Technology Edition) ›› 2018, Vol. 48 ›› Issue (6): 1669-1676.doi: 10.13229/j.cnki.jdxbgxb20170259

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Analysis of conflict factors between pedestrians and channelized right turn vehicles at signalized intersections

CHEN Yong-heng(),LIU Fang-hong,CAO Ning-bo   

  1. College of Transportation, Jilin University, Changchun 130022, China
  • Received:2017-03-21 Online:2018-11-20 Published:2018-12-11

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Abstract:

The operation of pedestrians and vehicles at signalized intersections differs between common right-turning and channelized right-turning. Compared with common right-turning, in channelized right-turning, the vehicle turning radius is larger, and velocity becomes faster. For pedestrians, there is no such aggregation characteristic during the red light. To get a better understanding of the conflict between pedestrians and channelized right turn vehicles at signalized intersections, odds-ratios were used to analyze the conflict risk between pedestrians in crossing the road and vehicles. Results show that the occurrences of pedestrian-vehicle conflict and pedestrians' yielding behavior to vehicles are influenced by the scale of crowd, the velocity of pedestrians, the trajectory chosen by pedestrians to cross the intersections and the direction whether the pedestrians are exiting or entering the intersection. On this basis, we made a penetrating analysis of different trajectory factors and obtained their influences on conflicts and pedestrians' yielding behaviors.

Key words: engineering of communications and transportation system, channelized right turn, risk analysis, conflicts between pedestrians and vehicles

CLC Number: 

  • U491

Fig.1

Conflicts between vehicles and pedestrians"

Table 1

Summary of investigated data"

参数 东进口平峰 东进口早高峰 西进口早高峰 西进口晚高峰 北进口早高峰 南进口早高峰
时长/h 4 1.5 1 1 1 1.167
车流量/(辆·h-1) 649 767 396 491 247 180
行人群/(群·h-1) 226 339 273 211 234 287
行人流量/(人·h-1) 325 514 366 290 293 352
非冲突组数量(占比) 365(39%) 176(31%) 167(58%) 95(40%) 200(85%) 276(82%)
冲突组数量(占比) 583(61%) 397(69%) 122(42%) 143(60%) 35(15%) 61(18%)
让路组(占比) 271(46%) 188(47%) 70(57%) 84(59%) 20(57%) 33(54%)
不让路组(占比) 312(54%) 209(53%) 52(43%) 59(41%) 15(43%) 28(46%)
跑步行人群(占比) 106(11%) 115(20%) 47(16%) 35(15%) 26(11%) 41(12%)
跑步多人群(占比) 7(7%) 19(17%) 5(11%) 4(11%) 7(27%) 4(10%)
完全使用(占比) 614(65%) 360(62%) 162(56%) 236(75%) 133(56%) 184(55%)
部分使用(占比) 218(23%) 133(56%) 96(33%) 54(17%) 77(33%) 67(20%)
完全不使用(占比) 116(12%) 90(15%) 31(11%) 26(8%) 25(11%) 86(25%)

Table 2

Conflict control study parameters"

暴露因素 非暴露因素
冲突组 A B
对照组 C D

Table 3

Results of odds-ratios to conflicts between pedestrians and channelized right turn vehicles"

东进口平峰4 h 东进口早高峰1.5 h 西进口早高峰1 h 西进口晚高峰1 h 北进口早高峰1 h 南进口早高峰1.167 h
冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR
多人群 192/101 1.28 143/44 1.69 31/38 1.16 44/24 1.31 6/37 0.91 11/48 1.05
单人群 391/264 0.78 254/132 0.59 91/129 0.86 99/71 0.76 29/163 1.10 50/228 0.96
跑步 80/26 2.07 94/21 2.29 28/19 2.32 25/10 1.80 8/18 3.00 15/26 3.14
步行 503/339 0.48 303/155 0.44 94/148 0.43 118/85 0.56 27/182 0.33 46/250 0.32
违反 192/142 0.77 145/68 0.91 49/78 0.76 39/41 0.28 11/91 0.55 17/136 0.40
遵守 391/223 1.30 252/108 1.09 73/89 1.31 182/54 3.54 24/109 1.82 44/140 2.51
完全不使用 77/39 1.13 68/22 1.32 11/20 0.67 14/12 0.35 4/21 0.86 8/78 0.33
完全使用 391/223 0.89 252/108 0.75 73/89 1.49 182/54 2.89 24/109 1.16 44/140 3.06
部分使用 115/103 0.64 77/46 0.72 38/58 0.80 25/29 0.26 7/70 0.45 9/58 0.49
完全使用 391/223 1.57 252/108 1.39 73/89 1.25 182/54 3.91 24/109 2.20 44/140 2.03
走出 240/162 0.88 172/88 0.76 59/78 1.07 70/56 0.67 14/95 0.74 29/149 0.77
进入 343/203 1.14 225/88 1.31 63/89 0.94 73/39 1.50 21/105 1.36 32/127 1.29

Table 4

Results of odds-ratios to pedestrian no-yielding behaviors under the conflicts"

东进口平峰4 h 东进口早高峰1.5 h 西进口早高峰1 h 西进口晚高峰1 h 北进口早高峰1 h 南进口早高峰1.167 h
不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR
多人群 99/93 0.89 58/85 0.47 11/20 0.67 18/26 1.02 3/3 1.42 5/6 0.98
单人群 213/178 1.12 151/103 2.15 41/50 1.49 41/58 0.98 12/17 0.71 23/27 1.02
跑步 54/26 1.97 70/24 3.44 20/8 4.84 15/10 2.52 6/2 6.00 12/3 7.50
步行 258/245 0.50 139/164 0.29 32/62 0.21 44/74 0.40 9/18 0.17 16/30 0.13
违反 111/81 1.30 84/71 1.11 19/30 0.77 17/21 1.21 4/5 1.09 7/10 0.77
遵守 201/190 0.77 125/117 0.90 33/40 1.30 42/63 0.82 11/15 0.92 21/23 1.30
完全不使用 29/48 0.57 36/32 1.05 2/9 0.26 6/8 1.23 1/2 0.68 2/6 0.37
完全使用 201/190 1.75 125/117 0.95 33/40 3.71 42/63 0.89 11/15 1.47 21/23 2.74
部分使用 82/33 2.35 48/39 1.15 17/21 0.98 11/13 1.27 3/4 1.02 5/4 1.36
完全使用 201/190 0.43 125/117 0.87 33/40 1.02 42/63 0.79 11/15 0.98 21/23 0.73
走出 113/130 0.62 89/83 0.94 29/30 1.68 29/42 0.97 8/6 2.67 15/14 1.57
进入 199/141 1.62 120/105 1.07 23/40 0.59 30/42 1.03 7/14 0.38 13/19 0.64

Fig.2

Trajectory distribution when a group of pedestrians don’t use pedestrian crossing completely"

Fig.3

Ttrajectory distribution when a group of pedestrians use pedestrian crossing partly"

Table 5

Results of odds-ratios of trajectory pedestrians chose to cross the intersections to conflicts between pedestrians and channelized right turn vehicles"

东进口平峰4 h 东进口早高峰1.5 h 西进口早高峰1 h 西进口晚高峰1 h 北进口早高峰1 h 南进口早高峰1.167 h
冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR 冲突组/
对照组		 OR
a 394/218 1.34 253/107 1.13 74/88 1.38 102/50 2.30 22/108 1.56 43/136 2.46
b 116/90 0.76 49/34 0.59 25/33 1.05 20/27 0.41 3/43 0.34 2/8 1.14
c 9/13 0.42 28/11 1.14 13/26 0.65 7/4 1.17 6/28 1.27 7/53 0.55
d 53/30 1.12 48/16 1.38 2/3 0.91 3/2 1.00 1/4 1.44 1/10 0.44
e 21/14 0.92 19/8 1.06 8/17 0.62 10/12 0.52 2/17 0.67 8/69 0.45

Table 6

Results of odds-ratios of trajectory pedestrians chose to cross intersections to pedestrian no-yielding behaviors under conflicts"

东进口平峰4 h 东进口早高峰1.5 h 西进口早高峰1 h 西进口晚高峰1 h 北进口早高峰1 h 南进口早高峰1.167 h
不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR 不让组/
让路组		 OR
a 200/190 0.77 126/127 0.73 33/41 1.23 40/62 0.75 10/12 1.46 20/23 1.09
b 77/29 2.73 31/18 1.64 12/13 1.32 9/11 1.19 2/1 2.92 2/0 -
c 4/5 0.69 17/11 1.42 5/8 0.82 3/3 1.45 2/4 0.62 3/4 0.87
d 19/34 0.45 28/20 1.30 0/2 0.00 2/1 2.91 0/0 - 0/1 0.00
e 10/12 0.72 7/12 0.51 2/6 0.43 4/6 0.95 0/2 0.00 3/5 0.67

Fig.4

Odds-ratios of the trajectory pedestrians chose to cross the intersections to conflicts"

Fig.5

Odds-ratios of the trajectory pedestrians chose to cross the intersections to pedestrian no-yielding behaviors under the conflicts"

Fig.6

Schematic of crossing distance and total distance"

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