中文摘要：

为明确公路隧道入口照明状态对交通安全的影响机理,建立隧道入口照明与交通安全的定量关系,以亮度指标为基础构建了隧道入口亮度过渡技术指标,以隧道入口前200 m处与隧道过渡段起点的断面速度差为交通流表征指标,用来间接反映交通安全状态.基于国内10个公路隧道的实测数据,建立了入口亮度过渡技术指标与断面速度差的关系模型.以断面车速差为依据,将隧道入口照明状态对交通安全的影响划分为三个等级,并确定了各等级所对应的亮度过渡技术指标阈值.结果表明：隧道入口照明状态与交通安全紧密相关,所构建的模型可以很好地评价隧道照明状态对交通安全的影响,成功地建立了公路隧道照明检测数据与交通安全的关系,可为公路隧道照明的养护和管理提供科学依据.

英文摘要：

To clarify the affect mechanism of highway tunnel lighting state on traffic safety and establish quantitative relationships between tunnel entrance lighting and traffic safety,a transitional technical indicator of tunnel entrance （TTI） was built based on brightness index,and section speed difference between the section 200m away from the tunnel entrance and the section of the transition segment starting point （SSD） was selected as traffic flow indicator to reflect traffic safety indirectly.A relational model of the TTI and SSD is established using field data of 10 highway tunnel in China.Effect of tunnel entrance lighting state on traffic safety is divided into three levels according to SSD and the thresholds of the TTI corresponding to the levels were determined.The results show that the proposed model can be used to explain the affect mechanism of highway tunnel lighting state on traffic safety.The relationship between highway tunnel lighting detection data and traffic safety is established successfully,which provide a scientific basis for the conservation and management of highway tunnel.