TRAFFIC PERFORMANCE MODELS FOR UNSIGNALISED INTERSECTIONS AND FIXED- TIME SIGNALS

New analytical models are presented for predicting various performance statistics for traffic in approach lanes controlled b give-way and stop signs and fixed-time signals. The models are a applicable to roundabouts. An integrated modelling framework is employed for consistency among different statistics and among mod for different intersection types. The models have the traditiona two-term form used for fixed-time signals, withadditional calibra factors introduced for each term of each model. The additional factors help to allow for the effects of variations in arrival fl rates and cycle capacities. The models for unsignalised intersections were developed by converting the block and unblock periods in traditional gap acceptance modelling to effective red green periods by analogy to traffic signal operations. This enab the modelling of the averageback of queue, proportion queued and queue move-up rates in a manner consistent with models for signal intersections. Data generated by a modified version of the microscopic simulation model MODELC were used for model calibrati Models were derived using a bunched exponential model of arrival headway distributions for all traffic streams. (a)

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 21-50

Subject/Index Terms

Filing Info

  • Accession Number: 00674546
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0-86910-64
  • Files: ITRD, , ATRI
  • Created Date: Mar 8 1995 12:00AM