Two-Variable Macroscopic Fundamental Diagrams for Traffic Networks

Victor L. Knoop () and Serge P. Hoogendoorn
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Victor L. Knoop: Delft University of Technology, Department of Transport & Planning
Serge P. Hoogendoorn: Delft University of Technology, Department of Transport & Planning

A chapter in Traffic and Granular Flow '11, 2013, pp 351-360 from Springer

Abstract: Abstract Traditionally, traffic is studied at the level of individual vehicles (microscopic), or the level of road sections (macroscopic). Recently, a higher level of study has been introduced, the level of an area. In homogeneous traffic conditions, there is a relationship between the number of vehicles in an area (accumulation) and the average flow in that area (production). This paper studies this relationship under inhomogeneity. Using simulation on a grid network it is shown that the performance of a network is a smooth function of the average network density (accumulation) and the spatial variation of the density. Hence, we introduce a two-variable macroscopic fundamental diagram (TV-MFD) which also holds in a inhomogeneous transition state, for instance in queue build up. The TV-MFD can be used for network control, for instance at ramp metering installations or at a more aggregate level perimeter control.

Keywords: Traffic Flow; Traffic State; Route Choice; Network Production; Outgoing Link (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-39669-4_34

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DOI: 10.1007/978-3-642-39669-4_34

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