Accounting for the Impact of Heavy Truck Traffic in Volume–Delay Functions in Transportation Planning Models

Truck traffic accounts for a substantial fraction of the traffic stream in many regions and is often the source of localized traffic congestion. This paper presents the analysis and findings that recommend updated volume–delay relationships for transportation planning models that account for total v...

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Published inTransportation research record Vol. 1931; no. 1; pp. 8 - 17
Main Authors Yun, Seongsoon, White, Wade W., Lamb, Daniel R., Wu, Yongqiang
Format Journal Article
LanguageEnglish
Published Los Angeles, CA SAGE Publications 2005
Online AccessGet full text
ISSN0361-1981
2169-4052
DOI10.1177/0361198105193100102

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Abstract Truck traffic accounts for a substantial fraction of the traffic stream in many regions and is often the source of localized traffic congestion. This paper presents the analysis and findings that recommend updated volume–delay relationships for transportation planning models that account for total volume, roadway capacity, and the mix of heavy truck traffic. The traditional Bureau of Public Roads function representing the speed–flow relationships for roadway facilities is modified to include the impact of truck traffic specifically. Several new speed–flow functions based on microsimulation results for freeways and urban arterials have been developed.
AbstractList Truck traffic accounts for a substantial fraction of the traffic stream in many regions and is often the source of localized traffic congestion. This paper presents the analysis and findings that recommend updated volume–delay relationships for transportation planning models that account for total volume, roadway capacity, and the mix of heavy truck traffic. The traditional Bureau of Public Roads function representing the speed–flow relationships for roadway facilities is modified to include the impact of truck traffic specifically. Several new speed–flow functions based on microsimulation results for freeways and urban arterials have been developed.
Author Lamb, Daniel R.
White, Wade W.
Wu, Yongqiang
Yun, Seongsoon
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Title Accounting for the Impact of Heavy Truck Traffic in Volume–Delay Functions in Transportation Planning Models
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