CALIBRATING NETSIM FOR A CBD USING THE TWO FLUID MODEL

This paper chronicles the calibration of NETSIM, a traffic network simulation model, in the CBD of San Antonio, Texas, with the use of the two-fluid model; a procedure, which, until now, had been performed only with a hypothetical network. Turning movement counts were used for input to NETSIM, and field studies were conducted to calibrate the two-fluid model for the San Antonio CBD. NETSIM was considered calibrated when a series of runs over all volume conditions resulted in the same (or similar) two-fluid parameters. Several features of NETSIM were used in its calibration: creation of new vehicle classes based upon differing maximum accelerations, maximum speeds, and queue discharge characteristics; parking intensity and short-term events. By far, the most effective tool in calibrating NETSIM in this network was the addition of new vehicle classes.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: v.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00662942
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Jul 7 1994 12:00AM