The impact of centroid connectors on transit assignment outcomes

Autor: François Pacull, Ouassim Manout, Patrick Bonnel
Přispěvatelé: Laboratoire Aménagement Économie Transports (LAET), Université Lumière - Lyon 2 (UL2)-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Polytechnique Montréal, Architecture & Performance
Jazyk: angličtina
Rok vydání: 2020
Předmět:
050210 logistics & transportation
Operations research
Computer science
Mechanical Engineering
05 social sciences
JEL: R - Urban
Rural
Regional
Real Estate
and Transportation Economics/R.R4 - Transportation Economics/R.R4.R41 - Transportation: Demand
Supply
and Congestion • Travel Time • Safety and Accidents • Transportation Noise
Centroid
Transportation
010501 environmental sciences
Management Science and Operations Research
Urban model
[SHS.ECO]Humanities and Social Sciences/Economics and Finance
01 natural sciences
Light rail
Position (vector)
0502 economics and business
11. Sustainability
Spatial aggregation
Transit (satellite)
JEL: R - Urban
Rural
Regional
Real Estate
and Transportation Economics/R.R4 - Transportation Economics/R.R4.R42 - Government and Private Investment Analysis • Road Maintenance • Transportation Planning
0105 earth and related environmental sciences
Information Systems
Zdroj: Public Transport
Public Transport, 2020, 12 (3), pp.611-629. ⟨10.1007/s12469-020-00246-w⟩
ISSN: 1613-7159
DOI: 10.1007/s12469-020-00246-w⟩
Popis: International audience; In transit modeling, access and egress conditions are often overlooked. The most common modeling technique of these conditions relies on the use of centroid connectors. This definition often uses the geographic position of zone centroids and sets constraints on the maximum number and length of connectors. This definition is subject to spatial aggregation issues and has already been proven to bias car assignment outcomes. The impact on transit assignment outcomes has not yet been demonstrated. The current paper investigates the statistical impact of connectors on transit assignment outcomes in an urban model of Lyon in France. Findings suggest that transit ridership, total passenger-kilometers and transit transfers are dependent on the definition of centroid connectors. Setting arbitrary values for the maximum number and length of connectors statistically affects transit results. The pattern and magnitude of this impact vary, however, between transit modes. The bus and rapid bus systems have been shown to be more sensitive towards the definition of connectors than the subway and the light rail systems. These findings question, to a certain extent, the validity and reliability of transit modeling outcomes.
Databáze: OpenAIRE
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