Voronoi densities for bicylists

adaptation for finite object size and speed

Conference paper (2020)

Authors

V.L. Knoop Transport and Planning - CEG
F.S. Hanseler Transport and Planning - CEG
M.J. Wierbos Transport and Planning - CEG
A. Gavriilidou Transport and Planning - CEG
W. Daamen Transport and Planning - CEG
S.P. Hoogendoorn Transport and Planning
Research Group
Transport and Planning (CEG) (TU Delft)
Copyright: © 2020 V.L. Knoop, F.S. Hanseler, M.J. Wierbos, A. Gavriilidou, W. Daamen, S.P. Hoogendoorn
DOI
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https://doi.org/10.1007/978-3-030-55973-1_63
Traffic flow Bicyclist traffic Density computation Voronoi areas Voronoi densities
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Published Date

2020

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Transport and Planning

Research Group

Transport and Planning

Abstract

Density is one of the most relevant variables in a traffic flow description. For objects in 2 dimensions, density can be determined by the space that is allocated to each of the objects. This paper introduces a new way of computing the space available for a bicyclist, accounting for speed and accounting for the non-zero size of a bicycle. This changes local densities. The proposed method modifies the Voronoi densities, and assigns space to a bicycle. We assign space to bicycle A if it has a closer proximity to any point of bicycle A than any point of any other bicycle. The proximity is determined by the distance and the angle in relation to velocity of the bicycle. Specific proximity functions need to be formulated and calibrated to match cyclist behavior. This method helps to define a density level for cyclists, which in turn can for instance lead to a better indication of a Level of Service.