Validating T-BEST Models with 100% APC Counts

The current version of the Transit Boarding Estimation and Simulation Tool (T-BEST) uses a set of boarding equations that were estimated with a small sample of boarding data. In addition, it uses an overall weekday peak that combines the morning and afternoon peaks. This report documents a research effort in re-estimating a set of boarding equations for T-BEST to achieve two objectives. One objective was to use boarding data that are far more reliable than what were used in estimating the current set of boarding equations. The other objective was to make improvements in the boarding equations. Both objectives have been successfully achieved. The first objective has been achieved through using boarding data from a fleet of bus vehicles that had an automated passenger counters (APC) penetration rate around 75%. The second objective has been achieved through many improvements in the boarding equations. Among these improvements is the separation of the current overall weekday peak into a morning peak and an afternoon peak. The re-estimated boarding equations perform well in terms of both how well the models fit the data and how observed and in-sample predictions compare. However, serious over-predictions can occur at a small number of stops, and these cases of over-prediction need to be dealt with individually as part of the validation process in each application of T-BEST.

• Record URL:
  https://doi.org/10.5038/CUTR-NCTR-RR-2005-02
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/38884
• Corporate Authors:

  National Center for Transit Research

  Center for Urban Transportation Research, University of South Florida
  4202 East Fowler Avenue, CUT 100
  Tampa, FL  United States  33620

  Florida Department of Transportation

  605 Suwannee Street
  Tallahassee, FL  United States  32399-0450

  Research and Special Programs Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Chu, Xuehao
• Publication Date: 2007-2

Language

• English

Media Info

• Media Type: Digital/other
• Features: Tables;
• Pagination: 23p

Subject/Index Terms

• TRT Terms: Accessibility; Boarding; Bus routes; Buses; Improvements; Peak periods; Public transit; Simulation; Stopping; Vehicle fleets
• Uncontrolled Terms: Automated passenger counters; Boarding equations; Bus service; Service planning; Transfer boarding
• Subject Areas: Passenger Transportation; Planning and Forecasting; Public Transportation;

Filing Info

• Accession Number: 01045429
• Record Type: Publication
• Report/Paper Numbers: NCTR-576-07, BD549-19
• Contract Numbers: DTRS98-G-0032 (Grant)
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Mar 26 2007 5:47PM