MODELING AND MEASUREMENTS OF BUS SERVICE RELIABILITY

A new concept for predicting the performance reliability of a bus service is developed and evaluated. Reliability of bus service is defined as the amount of consistency associated with an operational performance measure from day to day. The variability of travel time performance is posited as the best indicator of reliability. Travel time is found to be an accurate and easily collectible performance measure, and data are collected for several steady state periods. These are defined as periods in which performance measure characteristics remain relatively unchanged. A beta distribution with predicted parameters is fitted for the bus travel time data, both for peak and off-peak situations. Based on this distribution, a strategy for predicting performance reliability is suggested.

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Polus, A
• Publication Date: 1978-8

Media Info

• Features: References;
• Pagination: p. 253-256
• Serial:
  • Transportation Research /UK/
  • Volume: 12
  • Issue Number: 4
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Bus transit; Bus transportation; Forecasting; Level of service; Mathematical models; Measurement; Reliability; Routes; Travel time
• Old TRIS Terms: Bus transportation (Intracity); Route analysis
• Subject Areas: Highways; Motor Carriers; Planning and Forecasting; Public Transportation;

Filing Info

• Accession Number: 00188940
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Mar 28 1979 12:00AM