SIMULATION OF TRAFFIC FLOW ON GRADE SEPARATED INTERSECTIONS

SIMULERING AV TRAFIKFLOEDE I PLANSKILDA KORSNINGAR

A computer simulation model has been developed, that yields information about running times and delays of individual vehicles on grade separated intersections. The model is microscopic and the timekeeping incremental. Five classes of vehicles can be included in the model, which can broadly be divided into two submodels; the road model describing the geometric properties of the road, and the traffic model describing the structure and course of the traffic. Its limitations are mentioned. The validity of the model was tested by simulating traffic on 3 different road sections and comparing the results by traffic measurements on the corresponding real sections. The criteria used for validation were: a) the distribution of headways at the entries of the sections, and the headway distribution at one exit, b) the distributions of the running times of the vehicles in the road sections. The measurements on the two simplest road sections were recorded manually, while the third measurement was recorded by a helicopter mounted cine camera. Every simulated headway distribution at the different entries showed a very good agreement with corresponding measurement. The headway distribution at the exit was more varied. The distributions of the running times show rather large differences. /TRRL/

  • Corporate Authors:

    Chalmers University of Technology, Sweden

    Department of Applied Mechanics/CHARMEC
    Gothenburg,   Sweden 
  • Authors:
    • Wallman, C G
  • Publication Date: 1975

Language

  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 203 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00132321
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: Jun 23 1976 12:00AM