客车卡车等效行驶时间

Srinivas S. Pulugurtha, Ravina N. Jain
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引用次数: 3

摘要

《公路通行能力手册》(HCM)建议使用客车当量(PCE),以考虑卡车对道路运行性能的影响。研究人员根据过去的通行能力、车头时距、排队流量和延迟得出了PCE。然而,就行驶时间而言,卡车对道路运营性能的影响是否相同尚不清楚。本研究的重点是从行驶时间的角度评估卡车对运输系统性能的影响。收集了梅克伦堡县(城市地区)和里德尔县(农村地区)2017年的旅行时间数据,并对其进行处理,生成了69个数据集,说明了地区类型、时间变化、参考速度和交通状况。然后开发了普通最小二乘回归模型,以检验卡车行驶时间(因变量)和客车行驶时间(解释变量)之间的关系。系数表明,无论用于分析的数据集如何,卡车的平均行驶时间(ATT)都大于客车的ATT,Iredell县的两个案例除外。在某些情况下,卡车的ATT可能高达乘用车ATT的1.18倍。与乘用车的ATT相比,区域类型、星期几(DOW)、一天中的时间(TOD)、链路的参考速度和数据收集时的交通状况似乎都会影响不同规模下卡车的ATT。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Passenger car equivalent travel time of a truck

The Highway Capacity Manual (HCM) recommends the use of passenger car equivalent (PCE) to account for the influence of trucks on the operational performance of roads. Researchers have derived PCE based on capacity, headway, queue discharge, and delay in the past. However, it is not clear if the influence of trucks on the operational performance of roads would be the same in terms of travel time. The focus of this research is to assess the influence of trucks on the transportation system performance from a travel time perspective. The travel time data for Mecklenburg County (urban area) and Iredell County (rural area) were gathered for the year 2017 and processed to generate sixty-nine datasets accounting for the area type, temporal variation, reference speed, and traffic condition. Ordinary Least Square (OLS) regression models were then developed to examine the relationship between the travel time of trucks (dependent variable) and the travel time of passenger cars (explanatory variable). The coefficients indicate that the average travel time (ATT) of trucks is greater than the ATT of passenger cars irrespective of the dataset used for analysis, except in two cases of Iredell County. The ATT of trucks could be up to 1.18 times the ATT of passenger cars in some cases. The area type, day-of-the-week (DOW), time-of-the-day (TOD), reference speed of the link, and traffic condition at the time of data collection all seem to influence the ATT of trucks at different scales compared to the ATT of passenger cars.

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