Voronoi densities for bicylists: adaptation for finite object size and speed

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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.
Original languageEnglish
Title of host publicationProceedings of Traffic and Granular Flow 2019
EditorsIker Zuriguel, Angel Garcimartín, Raúl Cruz Hidalgo
PublisherSpringer
Chapter63
Pages515-521
Number of pages7
ISBN (Print)9783030559724
DOIs
Publication statusPublished - 2020
Event13th Conference on Traffic and Granular Flow, TGF 2019 - Pamplona, Spain
Duration: 2 Jul 20195 Jul 2019

Publication series

NameSpringer Proceedings in Physics
Volume252
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941

Conference

Conference13th Conference on Traffic and Granular Flow, TGF 2019
Country/TerritorySpain
CityPamplona
Period2/07/195/07/19

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Bicyclist traffic
  • Density computation
  • Traffic flow
  • Voronoi areas
  • Voronoi densities

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