Implementation of Travel Time in the CHART System

Travel time data and its dissemination to the traveling public has been implemented in the latest software release for Maryland’s CHART ATMS in December 2009. A particular challenge for the CHART system was that the existing speed detector system lacked sufficient density to reliably calculate travel times along most of the state’s highway network. The solution was to utilize travel time data from a subscription service (INRIX[RM] being the chosen vendor). This paper provides an overview on how the INRIX speed data is collected into the CHART system; how routes are defined; how the travel times are calculated per defined route; how administrators and operators manage the data and design messages; and how the travel times are displayed to the travelling public.

• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Smith, Darrell
  • Dalrymple, Scott
  • Melby, Scott
  • Doyle, Richard
• Conference:
  • ITS America 20th Annual Meeting & Exposition
  • Location: Houston TX, United States
  • Date: 2010-5-3 to 2010-5-5
• Publication Date: 2010

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References;
• Pagination: 18p
• Monograph Title: ITS America 20th Annual Meeting & Exposition

Subject/Index Terms

• TRT Terms: Data collection; Highway operations; Implementation; Real time information; Routes and routing; Speed detectors; Traffic data; Traffic flow; Traffic speed; Travel time
• Geographic Terms: Maryland
• Subject Areas: Highways; Operations and Traffic Management; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01342756
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 23 2011 9:07AM