Measurement and evaluation of transit travel time reliability

Details

• Creators:
  Watkins, Kari ; Rutherford, G. Scott
• Corporate Creators:
  United States. Department of Transportation. Office of the Secretary
• Subject/TRT Terms:
  Construction Design Standards Environmental Impacts Hydrologic Phenomena Land Use
• Publication/ Report Number:
  TNW2010-10
• Resource Type:
  Tech Report
• Edition:
  Final Research Report
• Corporate Publisher:
  Transportation Northwest (TransNow) UTC
• Abstract:
  Transportation system customers need consistency in their daily travel times to enable them to plan their daily
  
  activities, whether that is a commuter on their way to work, a company setting up delivery schedules for just‐in‐time
  
  manufacturing, or a transit agency scheduling coaches and drivers. To understand the effects such variability has on
  
  transportation customers, performance measures must take typical travel times into account as well deviation from
  
  those typical travel times. Some travel behavior studies have even suggested that reliability in travel is more important
  
  than travel time. As we strive to figure out how to achieve a sustainable transportation system, further research into
  
  understanding reliability and how it influences mode choice is needed. Reliability research must include measures of
  
  reliability that can be used across modes, ways to incorporate travel time reliability into travel demand forecasting and
  
  analysis of competitiveness of modes partially based on travel time reliability. We would like to obtain automated
  
  vehicle location data from King County Metro, Sound Transit, Tri‐met and other agencies. Our intent is to begin with an
  
  investigation of schedule adherence, a key measure of travel time reliability, to characterize which aspects of routes
  
  (exclusive lanes, CBD, monthly pass use) make them more or less reliable. However, the measure of schedule adherence
  
  doesn’t go far enough to allow comparison to other modes in an effort to understand if it is perception or reality that
  
  causes potential riders to avert from transit. In addition to schedule adherence, we would like to consider other aspects
  
  of reliability such as the relationship between travel time and the allowance of extra time to ensure meeting a schedule.
  
  We would also like to develop a system which takes other factors such as ridership into account in ranking of route
  
  reliability to help agencies prioritize infrastructure improvements to maximize value.
  
  
• Funding:
  DTRT07-G-0010
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha-512:5e3f4ed175b3eb274d000e41c668acae8b2ab34ae85523967ef0895b2408d1cb7da900c4f0a41157837cdedaf6b12a508536107606991859f8b262432bedc4f3
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18663/dot_18663_DS1.pdf
• File Type:
  [PDF - 367.92 KB ]