Travel times in quasi-dynamic traffic assignment

Conference paper (2019)

Authors

J.P.T. van der Gun Transport and Planning - CEG
A.J. Pel Transport and Planning - CEG
B. van Arem Transport and Planning - CEG
Research Group
Transport and Planning (CEG) (TU Delft)
Copyright: © 2019 J.P.T. van der Gun, A.J. Pel, B. van Arem
Capacity constraint Link performance function Link travel time Vertical queuing theory Quasi-dynamic traffic assignment
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Published Date

11-09-2019

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Transport and Planning

Research Group

Transport and Planning

Abstract

By extending static traffic assignment with explicit capacity constraints, quasi-dynamic traffic assignment yields more realistic results while avoiding many disadvantages of dynamic assignment. We analyse the computation of travel times in quasi-dynamic assignment models. We formulate requirements for the correctness of resulting travel times, addressing both the calculation of travel times for individual routes and links itself, as well as the differences between travel times of different travel choices. We derive a new link travel time formula from vertical queuing theory that meets all requirements, unlike existing approaches in literature.