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Transport user benefits calculation with the “Rule of a Half” for travel demand models with constraints

Winkler, Christian (2013) Transport user benefits calculation with the “Rule of a Half” for travel demand models with constraints. In: Proceedings of the 13th World Conference on Transport Research (WCTR). 13th World Conference on Transport Research (WCTR), 15.-18. Jul 2013, Rio de Janeiro.

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Abstract

The importance of user benefits in transport projects assessments is well-known by transport planners and economists. Generally they have the greatest impact on the result of costbenefit analysis. It is common practice to adopt the consumer surplus measure for calculating transport user benefits. Normally the well-known “Rule of a Half”, as a practical approximation for the integral of the demand curve, is used to determine the change of consumer surplus. In this paper we enter into the question of whether the Rule of a Half is valid in the case of travel demand models with multiple constraints. Such models are often used for travel demand modeling of large-scale areas. The most discussed and well-known model in transport modeling field is the doubly constrained gravity model. Beside this model with inelastic constraints there are also more flexible models with elastic constraints. The theoretical analysis in this paper provides a mathematical proof for the validity of the concept of the Rule of a Half for travel demand models with multiple elastic and inelastic constraints. In this case the Rule of a Half is also a correct approximation of the change of consumer surplus.

Item URL in elib:https://elib.dlr.de/87178/
Document Type:Conference or Workshop Item (Poster)
Title:Transport user benefits calculation with the “Rule of a Half” for travel demand models with constraints
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Winkler, Christianchristian.winkler (at) dlr.deUNSPECIFIED
Date:2013
Journal or Publication Title:Proceedings of the 13th World Conference on Transport Research (WCTR)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:consumer surplus, Rule of a Half, travel demand model, multinomial logit model, constraints
Event Title:13th World Conference on Transport Research (WCTR)
Event Location:Rio de Janeiro
Event Type:international Conference
Event Dates:15.-18. Jul 2013
Organizer:WCTRS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Projekt Verkehrsentwicklung und Umwelt (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Transport Research > Passenger Transport
Deposited By: Winkler, Dr.-Ing. Christian
Deposited On:06 Jan 2014 10:13
Last Modified:31 Jul 2019 19:44

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