首页|Accounting for the Impact of Heavy Truck Traffic in Volume-Delay Functions in Transportation Planning Models
Accounting for the Impact of Heavy Truck Traffic in Volume-Delay Functions in Transportation Planning Models
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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.
Seongsoon Yun、Wade W. White、Daniel R. Lamb、Yongqiang Wu
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University of Incheon, 177 Dowha-Dong, Nam-Gu, Incheon 402-749, South Korea
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