Journal of South China University of Technology(Natural Science Edition) ›› 2025, Vol. 53 ›› Issue (10): 1-13.doi: 10.12141/j.issn.1000-565X.240535
• Traffic Safety • Next Articles
WEN Huiying1, HUANG Junda1, HUANG Kunhuo1, ZHAO Sheng1, CHEN Zhe2, HU Yuqing2
Received:2024-11-05
Online:2025-10-25
Published:2025-04-10
Contact:
黄坤火(2000 —),男,博士,主要从事交通安全、轨迹冲突研究。
E-mail:202311081989@mail.scut.edu.cn
About author:温惠英(1965—),女,教授,博士生导师,主要从事交通规划、交通安全研究。E-mail:hywen@scut.edu.cn
Supported by:CLC Number:
WEN Huiying, HUANG Junda, HUANG Kunhuo, ZHAO Sheng, CHEN Zhe, HU Yuqing. Analysis of Freeway Accident Factors Integrating Short-Term Traffic Flow[J]. Journal of South China University of Technology(Natural Science Edition), 2025, 53(10): 1-13.
Table 3
Parameter estimation results of the standard multinomial logit model"
| 变量名称 | 参数估计 | 标准差 | z-stat | P值 | |
|---|---|---|---|---|---|
| 常数项[MI] | -0.950 | 0.655 | -1.451 | 0.147 | |
| 常数项[SI] | -2.744 | 1.308 | -2.098 | 0.036 | |
| 道路特征 | 普通坡道[MI] | -0.419 | 0.246 | -1.706 | 0.088 |
| 弯坡组合路段[MI] | -0.365 | 0.187 | -1.949 | 0.051 | |
| 弯坡组合路段[SI] | 2.237 | 0.806 | 2.777 | 0.005 | |
| 特殊路段[MI] | 1.116 | 0.306 | 3.647 | 0.000 | |
| 双向六车道[MI] | -3.232 | 0.262 | -12.347 | 0.000 | |
| 双向六车道[SI] | -1.969 | 0.548 | -3.595 | 0.000 | |
| 环境特征 | 00:00 — 05:59[MI] | 0.580 | 0.224 | 2.592 | 0.010 |
| 冬季[SI] | -1.369 | 0.502 | -2.728 | 0.006 | |
| 能见度[MI] | -0.303 | 0.082 | -3.701 | 0.000 | |
| 能见度[SI] | -0.708 | 0.175 | -4.044 | 0.000 | |
| 事故特征 | 追尾碰撞事故[MI] | 0.792 | 0.341 | 2.325 | 0.020 |
| 侧面碰撞事故[MI] | 1.251 | 0.320 | 3.908 | 0.000 | |
| 侧面碰撞事故[SI] | 1.009 | 0.500 | 2.018 | 0.044 | |
| 驾驶员操作不当[MI] | 1.214 | 0.208 | 5.836 | 0.000 | |
| 车辆故障及其他[MI] | 1.562 | 0.231 | 6.772 | 0.000 | |
| 多车事故[MI] | -1.117 | 0.329 | -3.393 | 0.001 | |
| 多车事故[SI] | -1.858 | 0.370 | -5.022 | 0.000 | |
| 外地车牌[MI] | 0.449 | 0.203 | 2.219 | 0.027 | |
| 涉及大型车[SI] | 0.951 | 0.356 | 2.668 | 0.008 | |
| 路政救援到达时长[MI] | 0.017 | 0.004 | 4.061 | 0.000 | |
| 路政救援处理时长[MI] | 0.008 | 0.002 | 5.255 | 0.000 | |
| 路政救援处理时长[SI] | 0.012 | 0.003 | 4.705 | 0.000 | |
| 交通流特征 | 路段平均速度[MI] | 0.047 | 0.017 | 2.747 | 0.006 |
| 路段平均速度[SI] | 0.119 | 0.029 | 4.129 | 0.000 | |
| 路段大型车平均速度[MI] | -0.039 | 0.017 | -2.313 | 0.021 | |
| 路段大型车平均速度[SI] | 0.770 | 0.081 | 9.551 | 0.000 | |
| 路段小型车平均速度[SI] | -0.852 | 0.083 | -10.250 | 0.000 | |
| 路段大型车比例[MI] | 2.928 | 0.610 | 4.799 | 0.000 | |
| 路段大型车比例[SI] | 4.258 | 1.029 | 4.138 | 0.000 | |
| 路段大型车与小型车速度差[MI] | 0.030 | 0.015 | 1.932 | 0.053 | |
| 路段大型车与小型车速度差[SI] | -0.773 | 0.081 | -9.532 | 0.000 | |
| 路段到达与离去交通量之差[SI] | -0.018 | 0.009 | -2.026 | 0.043 | |
Table 4
Parameter estimation results of the random parameters Logit model"
| 变量名称 | 参数估计 | 标准差 | z-stat | P值 | |
|---|---|---|---|---|---|
随机参数 均值(标准差) | 驾驶员操作不当[MI] | 3.210(5.080) | |||
| 路政救援处理时长[MI] | 0.035 8(0.100) | ||||
| 多车事故[SI] | -60.493(30.898) | ||||
| 常数项[MI] | -2.045 | 1.829 | -1.118 | 0.264 | |
| 常数项[SI] | -5.648 | 4.813 | -1.173 | 0.241 | |
| 路段特征 | 普通坡道[MI] | -1.767 | 0.926 | -1.908 | 0.056 |
| 弯坡组合路段[MI] | -1.012 | 0.604 | -1.677 | 0.094 | |
| 弯坡组合路段[SI] | 4.698 | 1.921 | 2.446 | 0.014 | |
| 特殊路段[MI] | 4.888 | 1.312 | 3.727 | 0.000 | |
| 双向六车道[MI] | -7.902 | 1.282 | -6.161 | 0.000 | |
| 双向六车道[SI] | -7.267 | 1.984 | -3.663 | 0.000 | |
| 环境特征 | 冬季[SI] | -3.683 | 1.545 | -2.383 | 0.017 |
| 00:00 — 05:59[MI] | 1.787 | 0.714 | 2.502 | 0.012 | |
| 能见度[MI] | -0.619 | 0.242 | -2.557 | 0.011 | |
| 能见度[SI] | -1.742 | 0.612 | -2.846 | 0.004 | |
| 事故特征 | 追尾碰撞事故[MI] | 3.326 | 1.153 | 2.884 | 0.004 |
| 侧面碰撞事故[MI] | 4.909 | 1.510 | 3.251 | 0.001 | |
| 侧面碰撞事故[SI] | 5.269 | 1.751 | 3.009 | 0.003 | |
| 车辆故障及其他[MI] | 3.236 | 0.686 | 4.716 | 0.000 | |
| 多车事故[MI] | -3.459 | 1.086 | -3.185 | 0.001 | |
| 外地车牌[MI] | 1.033 | 0.559 | 1.847 | 0.065 | |
| 涉及大型车[SI] | 4.002 | 1.476 | 2.711 | 0.007 | |
| 路政救援到达时长[MI] | 0.033 | 0.011 | 2.982 | 0.003 | |
| 路政救援处理时长[SI] | 0.018 | 0.007 | 2.643 | 0.008 | |
| 交通流特征 | 路段平均速度[MI] | 0.014 | 0.010 | 1.333 | 0.183 |
| 路段大型车比例[MI] | 6.135 | 1.598 | 3.838 | 0.000 | |
| 路段平均速度[SI] | 0.203 | 0.081 | 2.492 | 0.013 | |
| 路段小型车平均速度[SI] | -2.859 | 0.455 | -6.281 | 0.000 | |
| 路段大型车平均速度[SI] | 2.721 | 0.428 | 6.356 | 0.000 | |
| 路段大型车比例[SI] | 8.008 | 3.033 | 2.640 | 0.008 | |
| 路段到达与离去交通量之差[SI] | -0.063 | 0.033 | -1.884 | 0.060 | |
| 路段大型车与小型车速度差[SI] | -2.750 | 0.437 | -6.287 | 0.000 | |
Table 5
Parameter estimation results of the random parameters Logit model considering mean heterogeneity"
| 变量名称 | 参数估计 | 标准差 | z-stat | P值 | |
|---|---|---|---|---|---|
| 随机参数均值(标准差) | 驾驶员操作不当[MI] | 3.969(5.268) | |||
| 路政救援处理时长[MI] | 0.027(0.089) | ||||
| 多车事故[SI] | -63.132(25.529) | ||||
| 常数项[MI] | -2.701 | 1.856 | -1.455 | 0.146 | |
| 常数项[SI] | -4.201 | 4.616 | -0.910 | 0.363 | |
| 路段特征 | 普通坡道[MI] | -2.887 | 1.217 | -2.372 | 0.018 |
| 弯坡组合路段[SI] | 4.091 | 1.850 | 2.212 | 0.027 | |
| 特殊路段[MI] | 4.224 | 1.247 | 3.386 | 0.001 | |
| 双向六车道[MI] | -12.102 | 2.087 | -5.798 | 0.000 | |
| 双向六车道[SI] | -6.068 | 1.998 | -3.037 | 0.002 | |
| 环境特征 | 冬季[SI] | -3.332 | 1.493 | -2.231 | 0.026 |
| 00:00 — 05:59[MI] | 1.622 | 0.697 | 2.328 | 0.020 | |
| 能见度[MI] | -0.569 | 0.234 | -2.429 | 0.015 | |
| 能见度[SI] | -1.660 | 0.577 | -2.877 | 0.004 | |
| 事故特征 | 追尾碰撞事故[MI] | 3.579 | 1.148 | 3.118 | 0.002 |
| 侧面碰撞事故[MI] | 4.619 | 1.420 | 3.253 | 0.001 | |
| 侧面碰撞事故[SI] | 4.492 | 1.569 | 2.862 | 0.004 | |
| 车辆故障及其他[MI] | 3.652 | 0.742 | 4.920 | 0.000 | |
| 多车事故[MI] | -2.893 | 1.041 | -2.778 | 0.005 | |
| 外地车牌[MI] | 0.868 | 0.542 | 1.600 | 0.110 | |
| 涉及大型车[SI] | 3.433 | 1.381 | 2.487 | 0.013 | |
| 路政救援到达时长[MI] | 0.030 | 0.011 | 2.732 | 0.006 | |
| 路政救援处理时长[SI] | 0.016 | 0.007 | 2.437 | 0.015 | |
| 交通流特征 | 路段平均速度[MI] | 0.013 | 0.010 | 1.322 | 0.186 |
| 路段大型车比例[MI] | 5.791 | 1.553 | 3.730 | 0.000 | |
| 路段平均速度[SI] | 0.189 | 0.080 | 2.357 | 0.018 | |
| 路段小型车平均速度[SI] | -2.616 | 0.406 | -6.450 | 0.000 | |
| 路段大型车平均速度[SI] | 2.486 | 0.380 | 6.535 | 0.000 | |
| 路段大型车比例[SI] | 6.147 | 2.996 | 2.052 | 0.040 | |
| 路段到达与离去交通量之差[SI] | -0.064 | 0.031 | -2.075 | 0.038 | |
| 路段大型车与小型车速度差[SI] | -2.512 | 0.390 | -6.442 | 0.000 | |
| 随机参数的均值异质性 | 驾驶员操作不当、普通坡道 | 3.072 | 1.834 | 1.675 | 0.094 |
| 驾驶员操作不当、追尾碰撞事故 | -3.075 | 1.380 | -2.228 | 0.026 | |
| 路政救援处理时长、双向六车道 | 0.158 | 0.037 | 4.280 | 0.000 | |
| 多车事故、外地车牌 | 20.376 | 6.632 | 3.072 | 0.002 | |
| 多车事故、大型车比例 | 40.291 | 10.635 | 3.789 | 0.000 | |
Table 7
Average marginal values of variables on accident severity"
| 变量名称 | 考虑均值异质性的随机参数Logit模型 | |||
|---|---|---|---|---|
| 严重事故 | 一般事故 | 轻微事故 | ||
| 道路特征 | 普通坡道 | 0.000 4 | -0.0050 | 0.004 6 |
| 弯坡组合路段 | 0.0007 | -0.000 3 | -0.000 4 | |
| 特殊路段 | -0.000 2 | 0.0047 | -0.004 5 | |
| 双向六车道 | -0.0022 | -0.0218 | 0.024 0 | |
| 环境特征 | 00:00 — 05:59 | -0.000 5 | 0.0055 | -0.005 0 |
| 冬季 | -0.0014 | 0.000 7 | 0.000 7 | |
| 能见度 | -0.0296 | 0.0816 | 0.111 2 | |
| 事故特征 | 追尾碰撞事故 | -0.000 6 | 0.0510 | -0.050 4 |
| 侧面碰撞事故 | 0.0020 | 0.0050 | -0.007 0 | |
| 驾驶员操作不当 | -0.004 6 | 0.0359 | -0.031 3 | |
| 车辆故障及其他 | -0.001 3 | 0.0194 | -0.018 1 | |
| 涉及大型车 | 0.0063 | -0.002 5 | -0.003 8 | |
| 多车事故 | 0.0052 | -0.0430 | 0.037 8 | |
| 外地车牌 | 0.0007 | 0.0030 | -0.003 7 | |
| 路政救援到达时长 | -0.000 9 | 0.0163 | -0.015 4 | |
| 路政救援处理时长 | 0.0009 | 0.0450 | -0.045 9 | |
交通流特征 | 路段平均速度 | 0.0654 | 0.0035 | -0.068 9 |
| 路段小型车平均速度 | -0.0976 | 0.043 1 | 0.054 5 | |
| 路段大型车平均速度 | 0.0720 | -0.031 8 | -0.040 2 | |
| 路段大型车比例 | 0.0039 | 0.0347 | -0.038 6 | |
| 路段到达与离去交通量之差 | -0.0016 | 0.000 6 | 0.001 0 | |
| 路段大型车与小型车速度差 | 0.2224 | -0.102 1 | -0.120 3 | |
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Quantitative Estimation on the Safety Effect of Traffic Composition on Freeways
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| [15] | WEN Huiying TANG Zuogan. Comparative Study on Motorcycle Crash Injury Severity Estimation Based on Nested Logit and Random Parameters Logit Models [J]. Journal of South China University of Technology(Natural Science Edition), 2018, 46(11): 83-91. |
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