A comprehensive analysis on the pavement condition indices of freeways and the establishment of a pavement management system

作     者：Jyh-Dong Lin Min-Che Ho 

作者机构：Department of Civil EnvironmentNational Central University Department of Civil EnvironmentHiroshima University 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2016年第3卷第5期

页      面：456-464页

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 0813[工学-建筑学] 0814[工学-土木工程] 0823[工学-交通运输工程] 082301[工学-道路与铁道工程] 

主　　题：National freeway Traffic flow Skid number Degradation equation Pavement management system 

摘      要：In Taiwan, both the engineers and temporary employees serving in National Freeway Bureau are graduates of civil engineering. The lack of specialization in the pavement domains as students and the increasing financial requirement of pavement maintenance are hindering new engineers from further improving their knowledge on pavement. The present study aimed to improve the comfort index of national freeways. First, the inspection aspects of national freeways, such as road testing items and methods, are analyzed. Subsequently, the lack of previous literature on this subject prompted the researchers to organize relevant information pertaining to the comfort index and inspection processes of national freeways. The inspection and analysis of national freeways are beneficial for maintaining and enhancing the comfort and quality of national freeways. Moreover, the International Roughness Index is adopted to elucidate the differences exhibited at different speeds. In addition, the present study endeavored to determine skid number （SN） degradation equations to improve road traffic safety. First, a correlation analysis between SN and traffic flow, as well as between SN and climate data, was performed. Findings revealed an increased correlation between SN and traffic flow, while the correlation between SN and climate （temperature and rainfall） is less prevalent. Subsequently, traffic flow and climate were adopted as the factors for the SN degradation equations. The present study divided the traffic flow data of the entire national freeway system into five groups, enabling researchers to present individual SN degradation equations for various traffic flow conditions, thereby contributing to maintain and elevate the road traffic safety of national freeways.