考虑非机动车影响的直线式单泊位公交停靠站设置优化

李英帅; 马泽超; 王雯婧; 王卫杰

doi:10.3963/j.jssn.1674-4861.2021.05.017

考虑非机动车影响的直线式单泊位公交停靠站设置优化

doi: 10.3963/j.jssn.1674-4861.2021.05.017

1.
南京工业大学交通运输工程学院南京 211816
2.
重庆交通大学交通运输学院重庆 400074

基金项目:

道路交通安全公安部重点实验室开放课题项目 2017ZDSYSKFKT01

南京工业大学青年教师科研启动基金项目 3827400205

详细信息

通讯作者:
李英帅(1985—)，博士，讲师.研究方向：交通安全、驾驶行为. E-mail：tianwang0726@126.com

中图分类号: U491.8
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出版历程
- 收稿日期: 2020-09-22

Optimization of Single-berth Curbside Bus Stops Considering Impacts of Non-motorized Vehicles

1.
School of Transportation Engineering, Nanjing Tech University, Nanjing 211816, China
2.
Transportation institute of Chongqing Jiaotong University, Chongqing 400074, China

摘要

摘要:
为了降低非机动车对沿人行道设置的公交停靠站周边交通的影响，对直线式单泊位公交停靠站设置进行优化。选取重庆市6个沿人行道设置的单泊位公交停靠站进行调研，分析非机动车车道宽度、公交车停靠站长度、当量交通量、非机动车速度等参数与3类冲突率(非机动车与公交车3种形态的追尾与横向冲突率)的相关关系，拟合得到回归方程。根据回归方程和相关性系数建立交通冲突预测模型，并对模型进行验证，预测模型误差均小于10%。研究表明：当非机动车道设置宽度在3.5~4.0 m、直线式单泊位公交停靠站设置长度在16~18 m时，3类冲突率最低。当量交通量达到700 pcu/h之后，冲突率趋于平稳；此时非机动车速度仍不宜大于6 m/s。选取2个公交车停靠站进行冲突率预测，并对其进行安全等级评价。以冲突率最低值作为约束条件，对沿人行道设置的直线式单泊位公交停靠站进行优化。研究成果可为公交停靠站周边区域的交通管理和规划设计提供理论依据。
- 交通工程 /
- 公交停靠站 /
- 优化设计 /
- 交通冲突 /
- 非机动车干扰
Abstract:
Single-berth curbside bus stops are optimized to reduce the impacts of non-motorized vehicles on traffic flows around the bus stops along with sidewalks. Six single-berth curbside bus stops in the City of Chongqing are selected for case studies, with the analysis of the correlation among parameters including non-motorized vehicle lane width, length of bus stop, equivalent traffic volume, non-motorized vehicle speed, and three types of conflict rates(three types of rear-end conflict and horizontal conflict rates of non-motor vehicles and buses). In addition, regression models are developed in order to predict traffic conflicts. It is found that the prediction error of the prediction model is less than 10%. It is also found that when the width of the non-motorized lane is 3.5~4.0 m and the length of the single-berth curbside bus stop is 16~18 m, the conflict rate of the three types is the lowest. When the equivalent traffic volume reaches 700 pcu/h, the conflict rate becomes stable, and the speed of non-motorized vehicles should not be more than 6 m/s. Two bus stops are selected to predict the conflict rate and evaluate their safety levels. The lowest value of the conflict rate is used as a constraint to optimize the linear single-berth bus stops along the sidewalk. It is believed that the conclusions of this study provide a theoretical basis for traffic management around bus stops and planning, and design of related facilities.
- traffic engineering /
- bus stop /
- optimal design /
- traffic conflict /
- non-motor vehicle interference

HTML全文

图 1 冲突率与非机动车道宽度的关系

Figure 1. Relationship between the conflict rate and non-motorized lane width

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图 2 冲突率与公交停靠站长度的关系

Figure 2. Relationship between the conflictrate andlength ofbusstop

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图 3 冲突率与非机动车速度的关系

Figure 3. Relationship between the conflict rate and non-motorized vehicle speed

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图 4 冲突率与当量交通量的关系

Figure 4. Relationship between the conflict rate and equivalent traffic volume

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图 5 可视化预测模型

Figure 5. The visual prediction model

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图 6 冲突率频率分布及累计频率曲线

Figure 6. Frequency distribution of conflict rates and cumulative frequency curves

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表 1 公交停靠站交通冲突率估算值与实际值对比结果

Table 1. Comparison results of traffic conflicts between estimated and actual values at bus stops

冲突率	估算值 (次/×10³ pcu)	实际值 (次/×10³ pcu)	误差/ %
第一类冲突率	72.5	114.6	58.2
第二类冲突率	75.3	110.8	62.7
第三类冲突率	4.0	3.6	6.4

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表 2 安全等级划分

Table 2. Safety classification

安全分级	安全等级	冲突率范围
1	特别安全	≤ 80
2	安全	80 ≤ x < 180
3	临界安全	180 ≤ x < 230
4	不安全	230 ≤ x < 350
5	特别危险	≥ 350

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表 3 实例公交停靠站几何特性及交通流特性

Table 3. Geometric characteristics and traffic flow characteristics of sampled bus stops

公交站	几何特征		交通流特性
公交站	非机动车道宽度/m	公交停靠站长度/m	非机动车速度(m/s)	当量交通量(pcu/h)
虎溪站	3.3	14	3.8	18
大学城U城站	3.8	16	1.7	20

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表 4 实例公交站交通冲突预测对比

Table 4. Comparison of prediction of the traffic conflicts of sampled bus stops

公交站	交通冲突率/(次/x10³ pcu)
公交站	第一类冲突	第二类冲突	第三类冲突	总冲突率
虎溪站	109.9	122.3	42.1	274.3
大学城U城站	59.9	76.6	23.5	160.1

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表 5 虎溪站公交停靠站改善建议值

Table 5. Suggested design values for improving Huxi bus stop

公交站	非机动车道宽度/m	公交停靠站长度/m	非机动车速度(m/s)
虎溪站	3.5	17	3

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表 6 虎溪站改善后交通冲突率预测值

Table 6. Predicted values of traffic conflict rates after the improvement of Huxi stop

公交站	交通冲突率(次/×10³ pcu)
公交站	第一类冲突	第二类冲突	第三类冲突	总冲突
虎溪站	89.6	99.3	22.4	211.4

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