Travel times in quasi-dynamic traffic assignment

Paper authored by Jeroen P.T. van der Gun, Adam J. Pel and Bart van Arem in 2019.

Conference contribution number 74 presented at the 8th Symposium of the European Association for Research in Transportation (hEART 2019) in Budapest, Hungary on 4–6 September 2019.

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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.

Keywords: quasi-dynamic traffic assignment, link travel time, vertical queuing theory, capacity constraint, link performance function.

Citation: Van der Gun, J.P.T., Pel, A.J., Van Arem, B. (2019). Travel times in quasi-dynamic traffic assignment. Paper no. 74 presented at the 8th Symposium of the European Association for Research in Transportation (hEART 2019). Budapest, Hungary, 4–6 September.