CAJ | 학술논문

本文以京港澳高速公路湖北省内金山—武汉南路段内的交通流检测器及其附近设置于路侧的公路气象站的历史数据为主要研究数据，针对雾天低能见度等天气因素，分析有无雾及不同能见度条件对车辆速度均值及速度离散型的影响；研究在雾天条件下，不同车道位置、不同车辆类型、不同时间时段的车辆行驶速度的差异性；基于交通流Greenshield经典V-K关系，采用非线性回归方法，建立雾天车辆平均行驶速度综合预测模型，模型的拟合优度达到80%。研究成果对研究公路沿线能见度因素对行车安全影响，分析雾天等低能见度条件下的公路通行能力，制定雾天等低能见度条件下可变速度控制等交通控制措施具有重要参考与借鉴意义。
본문이경항오고속공로호북성내금산—무한남로단내적교통류검측기급기부근설치우로측적공로기상참적역사수거위주요연구수거，침대무천저능견도등천기인소，분석유무무급불동능견도조건대차량속도균치급속도리산형적영향；연구재무천조건하，불동차도위치、불동차량류형、불동시간시단적차량행사속도적차이성；기우교통류Greenshield경전V-K관계，채용비선성회귀방법，건립무천차량평균행사속도종합예측모형，모형적의합우도체도80%。연구성과대연구공로연선능견도인소대행차안전영향，분석무천등저능견도조건하적공로통행능력，제정무천등저능견도조건하가변속도공제등교통공제조시구유중요삼고여차감의의。
This paper explores the effects of traffic visibility on characteristics of vehicle speed, based on the traffic and road weather data of detectors positioned on the road segment between Jinshan and Wuhannan interchange of Jinggangao (G4) expressway in Hubei province. Focusing on the limited visibility weather element, this paper analyzes the effects of visibility on the mean speed and speed variation by fog or non-fog weather, or under fog weather condition with different visibility; speed characteristics are deeply explored from aspects of different factors of traffic lane, vehicle types and temporal hour, utilizing detailed traffic data containing traffic lane and vehicle type information. The comprehensive speed prediction model is built under fog weather condition considering several factors based on the classic traffic flow theory of Greenshield’s V-K relation, and the goodness-of-fit of the speed prediction model reaches 80%approximately. The research results of this paper can be useful or as a reference to impacts analysis of limited visibility on traffic safety, operation, and traffic capacity analysis, or decision making process of traffic control measures such as variable speed limit under adverse road weather conditions.