China Safety Science Journal ›› 2022, Vol. 32 ›› Issue (5): 170-176.doi: 10.16265/j.cnki.issn1003-3033.2022.05.1602
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XIONG Xiaoxia1(), LIU Qingchao2,**(), SHEN Yujie2, CAI Yingfeng2, CHEN Long2
Received:
2021-12-12
Revised:
2022-03-15
Online:
2022-08-17
Published:
2022-11-28
Contact:
LIU Qingchao
XIONG Xiaoxia, LIU Qingchao, SHEN Yujie, CAI Yingfeng, CHEN Long. Study on risk model of highway traffic accidents based on LSTM-BF[J]. China Safety Science Journal, 2022, 32(5): 170-176.
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Tab.1
Statistics on road section of accidents
路段 | 上游路段 | 下游路段 | 事故数(2020-07-02— 2020-11-10) | |||||||
---|---|---|---|---|---|---|---|---|---|---|
上游车 道数 | 上游卡口日 平均交通量 | 下游车 道数 | 下游卡口日 平均交通量 | |||||||
K0+900九向-K8+200九向 | 3 | 22 739 | 3 | 24 861 | 7.30 | 30 | ||||
K1+600姜向-K82+375姜向 | 3 | 25 806 | 3 | 28 385 | 4.73 | 48 | ||||
K10+100姜向-K1+600姜向 | 3 | 23459 | 3 | 25806 | 8.50 | 47 | ||||
K11+400姜向-K10+100姜向 | 2 | 20 029 | 3 | 23 459 | 1.30 | 5 | ||||
K79+420九向-K82+500九向 | 4 | 47 062 | 4 | 31 749 | 3.10 | 11 | ||||
K8+200九向-K11+400九向 | 3 | 24 861 | 2 | 19 047 | 3.20 | 16 | ||||
K82+500九向-K0+900九向 | 4 | 31 749 | 3 | 22 739 | 3.90 | 26 | ||||
总计 | — | 183 |
Tab.2
Single-step input features of LSTM
变量名 | 变量描述 |
---|---|
Vol_up | 5 min内上游卡口流量/veh |
Vol_down | 5 min内下游卡口流量/veh |
Diff_Lane_Flow_up | 5 min内上游卡口第1和第2车道流量差/veh |
Diff_Lane_Flow_down | 5 min内下游卡口第1和第2车道流量差/veh |
Len_up_down | 上下游卡口的距离/km |
Lane_Num_up | 上游卡口车道数 |
Lane_Num_down | 下游卡口车道数 |
Dens_Road_up | 上游卡口交通流平均密度/(veh·km-1) |
Dens_Road_down | 下游卡口交通流平均密度/(veh·km-1) |
Dens_Lane_up | 上游卡口车道平均流量/veh |
Dens_Lane_down | 下游卡口车道平均流量/veh |
Largeveh_Ratio_up | 上游卡口大型/小型车流量比 |
Largeveh_Ratio_down | 下游卡口大型/小型车流量比 |
Time of Day | 一天中的时间(日时间) |
Day of Week | 一周中的时间(周时间) |
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