Improvement of the volume-delay function by incorporating the impact of trucks on traffic flow

Mueller Stephan; Schiller Christian

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Improvement of the volume-delay function by incorporating the impact of trucks on traffic flow

机译：通过合并卡车对交通流量的影响来改善音量延迟功能

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摘要

In current transportation modelling, travel time is the most important factor in decisions regarding transport modes, destinations and routes. The calculation of travel time is deployed by volume-delay functions (VDFs), a sub-model of route assignment procedure, using the correlation between increasing numbers of vehicles on a road and the road's restrictive capacity. By investigating existing VDFs, a clear gap is seen, demonstrating that current functions are not suited to reflect the empirically known large impact of trucks on passenger car travel times. This issue becomes crucial when transport models are used to reflect future scenarios where goods transportation is expected to increase greatly, and when transport models combine passenger and commercial traffic. This paper presents a new VDF which successfully includes trucks' impact on traffic flow in the case of Germany and, with slight deviations, for North America. The function is developed using ideal-type data for German motorways. The differences between German and US data and their implications for VDFs are also discussed.

机译：在当前的运输模型中，旅行时间是决定运输方式，目的地和路线的最重要因素。行驶时间的计算是通过体积延迟函数（VDF）进行的，该函数是路线分配过程的子模型，使用的是道路上车辆数量的增加与道路限制容量之间的相关性。通过调查现有的VDF，可以看到一个明显的差距，表明当前的功能不适合反映卡车对乘用车行驶时间的经验已知的巨大影响。当使用运输模型来反映将来货物运输预计会大大增加的情况以及运输模型将客运和商业运输结合起来时，此问题就变得至关重要。本文介绍了一种新的VDF，该产品成功地包括了卡车对德国交通的影响，而在北美地区则略有偏差。该功能是使用德国高速公路的理想类型数据开发的。还讨论了德国和美国数据之间的差异及其对VDF的影响。

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《Transportation planning and technology》 |2015年第8期|878-888|共11页
作者
Mueller Stephan; Schiller Christian;
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作者单位

German Aerosp Ctr DLR, Inst Transport Res, D-12489 Berlin, Germany;

Tech Univ Dresden, Tech Univ Dresden, Inst Transport Planning & Rd Traff, Dept Transportat Planning Theory, D-01069 Dresden, Germany;

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正文语种 eng
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关键词
Transportation modelling; volume-delay function; correlation function; volume-delay modelling; truck impact; Germany; North America;

机译：运输模型;体积延迟函数;相关函数;体积延迟建模;卡车撞击;德国;北美;

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Improvement of the volume-delay function by incorporating the impact of trucks on traffic flow

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