Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (6): 1858-1864.doi: 10.13229/j.cnki.jdxbgxb20180928

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Setting condition of on⁃street parking space occupied vehicle lane

Guo-zhu CHENG1,Si-he FENG1,Tian-jun FENG2()   

  1. 1. School of Traffic and Transportation, Northeast Forestry University, Harbin 150040, China
    2. School of Transportation Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
  • Received:2018-09-13 Online:2019-11-01 Published:2019-11-08
  • Contact: Tian-jun FENG E-mail:68202791@qq.com

Abstract:

In order to provide reference for setting on-street parking space that occupies vehicle lane, traffic flow parameters survey was conducted under the interruption of on-street paring. The changing rules of cars’ saturated headway with the number of on-street parking cars were analyzed. The models between the saturated headway with the number of on-street parking cars on adjacent lane and interval lane were established respectively using SPSS software. Based on established models, suggested thresholds of traffic volume for adjacent lane and interval lane were given to set on-street parking lot, and case study was conducted. It shows that cars' saturated headway on adjacent lane and interval lane increases with the number of on-street parking cars and there are quadratic function relations between them. With the increase in the number of on-street paring cars the road design speed increases, and the adjustment factor decreases for possible capacity, so the setting of on-street parking lot is more improper. When the number of on-street parking car is the same, adjustment factor for possible capacity of interval lane is larger than that of adjacent lane, so the influence of on-street parking on traffic operation of interval lane is less than that of adjacent lane.

Key words: engineering of communications and transportation system, on-street parking, possible capacity, adjacent lane, interval lane, setting condition

CLC Number: 

  • U491

Table 1

Observed data"

路内停车

数量/

(pcu·min-1)

饱和车头时距/s

路内停车

数量/

(pcu·min-1)

饱和车头时距/s

邻近

车道

间隔

车道

邻近

车道

间隔

车道

2 2.9 2.9 6 2.9 2.9
3 2.9 2.9 5 2.9 2.9
4 2.9 2.9 7 3.1 3.0
8 3.1 3.0 5 3.0 2.9
2 2.9 2.9 4 2.9 2.9
4 2.9 2.9 5 2.9 2.9
1 2.9 2.9 7 3.1 3.0
3 2.9 2.9 6 3.0 2.9
2 2.9 2.9 6 3.0 2.9
4 2.9 2.9 5 3.0 2.9
1 2.9 2.9 9 3.2 3.0
2 2.9 3.0 6 3.0 2.9
6 3.0 2.9 3 2.9 2.9
4 2.9 2.9

Fig.1

Scatter points of saturated headway on adjacent lane and the number of parking cars"

Fig.2

Scatter points of saturated headway on interval lane and the number of parking cars"

Fig.3

Fitting curves of saturated headway on adjacent lane and the number of parking cars"

Table 2

Fitting functions of saturated headway on adjacent lane and number of parking cars"

模型形式 函数表达式 R 2
线性函数 y = 0.0302 x + 2.8414 0.809 0
二次函数 y = 0.0052 x 2 - 0.0176 x + 2.93 0.940 9
指数函数 y = 2.8452 e 0.01 x 0.815 4
对数函数 y = 0.0922 l n ( x ) + 2.8509 0.576 2
幂函数 y = 2.8538 x 0.0307 0.584 3

Fig.4

Fitting curves of saturated headway on interval lane and number of parking cars"

Table 3

Fitting functions of saturated headway oninterval lane and number of parking cars"

模型形式 函数表达式 R 2
线性函数 y = 0.0111 x + 2.8791 0.508 3
二次函数 y = 0.0038 x 2 - 0.0238 x + 2.9438 0.834 2
指数函数 y = 2.8798 e 0.0038 x 0.508 6
对数函数 y = 0.0298 l n ( x ) + 2.8882 0.278 9
幂函数 y = 2.8887 x 0.0101 0.279 1

Table 4

Basic capacity per lane of urban arterial road"

设计速度/(km·h-1 60 50 40 30 20

基本通行能力/

(pcu·h-1·ln-1

1 800 1 700 1 650 1 600 1 400

Table 5

Suggested value of correction coefficient ofadjacent lane capacity"

路侧停车数量/

(pcu·min-1)

设计速度/(km·h-1
60 50 40 30 20
2 0.686 0.726 0.748 0.772 0.882
3 0.684 0.724 0.746 0.769 0.879
4 0.680 0.720 0.741 0.765 0.874
5 0.673 0.713 0.734 0.757 0.865
6 0.664 0.703 0.724 0.747 0.854
7 0.653 0.692 0.713 0.735 0.840
8 0.641 0.678 0.699 0.721 0.824

Table 6

Thresholds of traffic volume on adjacent lane for setting on-street parking lot (pcu·h-1·ln-1)"

停车数量/(pcu·min-1) 交通组成修正系数
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3
2 988 889 790 691 593 494 395 296
3 985 886 788 689 591 492 394 295
4 979 881 783 685 587 489 391 294
5 969 872 775 678 581 485 388 291
6 956 861 765 669 574 478 383 287
7 941 847 753 658 564 470 376 282
8 922 830 738 646 553 461 369 277

Table 7

PCE of urban road"

车辆类型 小型车 大型客车 大型货车 铰接车
折算系数 1.0 2.0 2.5 3.0

Table 8

Suggested value of correction coefficient ofinterval lane capacity"

路侧停车数量/

(pcu·min-1)

设计速度/(km·h-1)
60 50 40 30
3 0.688 0.729 0.751 0.774
4 0.687 0.728 0.750 0.773
5 0.685 0.725 0.747 0.771
6 0.681 0.721 0.743 0.766
7 0.675 0.715 0.736 0.759
8 0.667 0.707 0.728 0.751

Table 9

Thresholds of traffic volume on interval lane for setting on-street parking lot (pcu·h-1·ln-1)"

停车数量/(pcu·min-1) 交通组成修正系数
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3
3 991 892 793 694 595 495 396 297
4 990 891 792 693 594 495 396 297
5 986 888 789 690 592 493 395 296
6 980 882 784 686 588 490 392 294
7 972 875 777 680 583 486 389 292
8 961 865 769 673 577 481 384 288

Table 10

Supplementary survey data"

路段

编号

设计速度/

(km·h-1)

基本通行能力/

(pcu·h-1·ln-1

路内停车数量/

(pcu·min-1

小客车饱和车头时距/s
邻近车道 间隔车道
1 20 1 400 8 3.2 3.0
2 30 1 600 6 3.0 3.0
3 40 1 650 4 3.0 2.9
4 50 1 700 5 3.0 3.0
5 60 1 800 7 3.1 3.0

Table 11

Comparisons between calculated and observed values of actual traffic capacity"

路段

编号

邻近车道/(pcu·h-1·ln-1 间隔车道/(pcu·h-1·ln-1
计算值 实测值 误差/% 计算值 实测值 误差/%
1 1 154 1 201 2.22 1 129 1 180 1.77
2 1 195 1 180 1.26 1 226 1 204 1.79
3 1 223 1 220 0.19 1 238 1 229 0.72
4 1 212 1 196 1.35 1 233 1 220 1.00
5 1 175 1 161 1.22 1 215 1 192 1.93
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