QBLOK: AN ASSIGNMENT TECHNIQUE FOR MODELLING THE DEPENDENCY BETWEEN BOTTLENECKS AND THE PREDICTION OF "GRID LOCK"

QBLOK: EEN TOEDELINGSMETHODIEK VOOR HET MODELLEREN VAN DE AFHANKELIJKHEID TUSSEN KNELPUNTEN EN DE VOORSPELLING VAN BLOKKADES

In the Second Transport Structure plan, SVV-II, the Dutch Ministry of Transport, formulated a group of measures to exploit better the existing infrastructure. For the development and implementation of traffic demand measurements the Ministry initiated a number of projects. One of these projects aims at forecasting the accessibility and congestion in the short and medium term. One special aspect within this project focuses on the development of blockages. For this project the existing assingnment technique of the Duth National Model System, QNET, has been extended. QNET, contrary to conventional assignment, aims at a more realistic way of modelling standing traffic. In QNET the link travel times are calculated using inflow restrictions when traffic is involved in a jam on preceding links. The QNET principle is further extended by enlarging the interaction between bottlenecks and the explicit modelling of blockages. The paper describes this new assignment technique QBLOK and illustrates the differences with QNET on the base of some assignments.A) For the covering abstract of the conference see IRRD 871533.

Language

  • Dutch

Media Info

  • Features: References;
  • Pagination: p. 313-32

Subject/Index Terms

Filing Info

  • Accession Number: 00712264
  • Record Type: Publication
  • Source Agency: Institute for Road Safety Research, SWOV
  • Files: ITRD
  • Created Date: Oct 24 1995 12:00AM