User Perception and Preference for Displaying Travel Time on Changeable Message Signs in San Francisco Bay Area

This study analyzes the results of a web-based user survey conducted during June to November 2007 in the San Francisco Bay Area regarding user perception and preference for displaying travel time on changeable message signs (CMS). The results reveal that users generally perceives it useful to travel time display on CMS, even when the perceived accuracy of travel time display is not great (e.g. within 10-15 minutes). Travel time display is useful not only because it helps users to make route choice decisions. A large threshold for the difference between expected route travel times needs to be reached before commuters switch from their usual routes. The effectiveness of CMS alone in persuading drivers to divert is likely to be small.


  • English

Media Info

  • Media Type: DVD
  • Features: Figures; References;
  • Pagination: 16p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01154469
  • Record Type: Publication
  • Report/Paper Numbers: 10-2956
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 11:27AM