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.
- First in a series on Management of Traffic Systems conducted by Alberto J. Santiago and Sam Yagar on behalf of the Federal Highway Administration (FHWA).
Washington, DC United States 20590
- Denney, R W
- Williams, J C
- Bhat, SCS
- Ardekani, S A
- Large Urban Systems. Proceedings of the Advanced Traffic Management Conference
- Location: St. Petersburg, Florida
- Date: 1993-10-3 to 1993-10-8
- Publication Date: 1993-10
- Features: Figures; References;
- Pagination: v.p.
- TRT Terms: Central business districts; Traffic characteristics; Traffic models; Traffic simulation
- Geographic Terms: San Antonio (Texas)
- Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;
- Accession Number: 00662942
- Record Type: Publication
- Files: TRIS, USDOT
- Created Date: Jul 7 1994 12:00AM