CAJ | 학술논문

可变限速控制可减小降雨导致的高速公路交通拥堵和事故风险.提出雨天高速公路可变限速控制策略，对经典的元胞传输模型进行改进，构建适用于雨天可变限速控制问题的高速公路动态交通流模型；在综合考虑交通安全和效率基础上，建立雨天环境下高速公路可变限速控制方法和模型.实验结果表明，与固定限速相比，雨天可变限速控制下高速公路平均速度增加了9.3%，车辆总行驶时间减少了11.7%，相邻路段最大车速差从17.5 km/h减小为9.4 km/h，降幅达46.3%，有效地提高雨天环境下高速公路通行效率和安全性.
가변한속공제가감소강우도치적고속공로교통옹도화사고풍험.제출우천고속공로가변한속공제책략，대경전적원포전수모형진행개진，구건괄용우우천가변한속공제문제적고속공로동태교통류모형；재종합고필교통안전화효솔기출상，건립우천배경하고속공로가변한속공제방법화모형.실험결과표명，여고정한속상비，우천가변한속공제하고속공로평균속도증가료9.3%，차량총행사시간감소료11.7%，상린로단최대차속차종17.5 km/h감소위9.4 km/h，강폭체46.3%，유효지제고우천배경하고속공로통행효솔화안전성.
Variable speed limits can decrease traffic congestion and accident risk due to rainfall. For rain weather, the control strategy of variable speed limits system are described; the classic Cell Transmission Model is improved, and dynamic traffic flow models for rain weather are proposed;optimization models of variable speed limits for rainfall are presented, considering both traffic safety and efficiency. Experiment results show that, comparing with static speed limit, freeway average speed increased by 9.3%, total travel time decreased by 11.7%, and the maximum speed difference between adjacent sections decreased from 17.5 km/h to 9.4 km/h by 46.3%.The results mean that variable speed limits can improve freeway traffic efficiency and safety under rain weather.