详情

原文传递 Factors Contributing to Operating Speeds on Arterial Roads by Context Classifications

题名：	Factors Contributing to Operating Speeds on Arterial Roads by Context Classifications
正文语种：	eng
作者：	Nada Mahmoud;Mohamed Abdel-Aty;Qing Cai
作者单位：	Dept. of Civil Environmental and Construc-tion Engineering Univ. of Central Florida 12800 Pegasus Dr. Suite 211 P.O. Box 162450 Orlando FL 32826;Dept. of Civil Environmental and Con-struction Engineering Univ. of Central Florida 12800 Pegasus Dr. Suite 211 P.O. Box 162450 Orlando FL 32826;Dept. of Civil Environmental and Construction Engineering Univ. of Central Florida 12800 Pegasus Dr. Suite 211 P.O. Box 162450 Orlando FL 32826
关键词：	Arterial road; Context classification; Operating speed; Tobit model; Big data; INRIX
摘要：	The aim of this study was to evaluate and identify the factors influencing operating speed considering context classification. The study focused on three context classifications: C3R-Suburban Residential, C3C-Suburban Commercial, and C4-Urban General. Tobit models were proposed and developed using big data, including traffic and roadway characteristics, land-use attributes, and sociodemo-graphic information. Three years of INRIX speed data were obtained to calculate the 85th-percentile speed. The study proposed an approach to adjust the 85th-percentile speed from INRIX data, given that traffic flow on arterials could be disrupted by signalized intersections. Afterward, empirical analysis was conducted by developing three Tobit models: Generic, C3C/C3R, and C4 models using the adjusted 85th-percentile speed. For the three developed models, several variables [e.g., inside shoulder width, speed limit, and number of signalized intersections per mile (1.609 km)] were found to have significant influence on the 85th-percentile speed. The analysis also revealed potential speed management countermeasures that have significant impact on the 85th-percentile speed which, when implemented, could reduce speed-related crashes and enhance the safety of vulnerable road users.
出版年：	2021
期刊名称：	Journal of Transportation Engineering
卷：	147
期：	8