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原文传递 Review of Methods for Estimation of Passenger Car Unit Values of Vehicles

题名：	Review of Methods for Estimation of Passenger Car Unit Values of Vehicles
正文语种：	英文
作者：	Pooja Raj1; Kalaanidhi Sivagnanasundaram2; Gowri Asaithambi3; Ayyalasomayajula Udaya Ravi Shankar4
作者单位：	1Research Scholar, Dept. of Civil Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India. 2Research Scholar, Faculty of Civil and Environmental Engineering, Technion Israel Institute of Technology, Haifa 3200003, Israel. 3Assistant Professor, Dept. of Civil Engineering, Indian Institute of Technology Tirupati, Andhra Pradesh 517506, India (corresponding author). 4Professor, Dept. of Civil Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India.
关键词：	Passenger car unit; Passenger car equivalent; Passenger car unit (PCU) estimation methods; Facility type; Homogeneous traffic; Mixed traffic
摘要：	Estimation of passenger car unit (PCU) values is very important for traffic capacity analysis and other relevant applications such as level of service (LOS) measures, determination of saturation flow rate, signal design and coordination, and development of traffic flow models. Because of such wide applications, the accuracy of PCU values is highly significant in traffic flow analysis. Many research works have been carried out on estimation of PCUs in the past few decades. In developed countries, various methods were developed for estimating PCU values for different types of facilities which carry trucks and buses of lesser composition. But these methods are not completely analogous for mixed traffic due to the presence of wide variety of vehicle types, nonlane discipline, intraclass variability of vehicles and their maneuverability. With this consideration, various methods used for estimating PCUs for different facility types under homogeneous and mixed traffic conditions are reviewed and the drawbacks of the existing methods are identified in this paper. The challenges in estimating PCU values and future directions for improving the PCU estimation methods are also presented.
出版年：	2019
期刊名称：	Journal of Transportation Engineering
卷：	145
期：	6
页码：	1-17