THE USER'S BEHAVIOR FACED WITH << SIRIUS >> TRAVEL TIMES: SURVEYS AND SOCIOECONOMIC EVIDENCE IN THE PARIS REGION

A new detailed scientific assessment of the results obtained with SIRIUS (traffic management system and drivers information service on the motorway network in the Paris region) has been driven according to the figures measured concerning users behavioral changes, after 2 years of real operation on 275 kms (170 miles) of inter-connected motorways. This is one of the very few << ex-post >> assessments available all over the world. Here are some of the reported quantitative results: Managing an existing network is twice more cost-effective than building new legs. At least 2% of cars change their route at a given moment, when faced with comparative traffic information, thus easing the traffic even for those who do not divert. The total benefit in terms of travel times is split in 94% for those who do not divert and a mere 6% of the overall benefit for the diverting vehicles. The saving in terms of safety represents roughly 15% of the savings in terms of travel times. The typical average speeds are 20 km/hr along jammed sections, 40 km/hr on heavy traffic legs and 90 km/hr on free flowing ones (respectively 12, 25 and 55 mph, according to the congestion experienced). These figures were measured before the signposting on variable message signs were changed for travel times displayed, in early 1996. The feelings about this change were monitored through 4 surveys (the same 800 drivers each) led just before, during the change and 3 then 5 months after it.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Durand-Raucher, Y
  • Orselli, J
  • Frybourg, M
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Behavior; Data collection; Driver information systems; Highway traffic control; Socioeconomic factors; Surveys; Traffic congestion; Traffic diversion; Traffic safety; Travel time
• Uncontrolled Terms: User behavior
• Subject Areas: Economics; Highways; Operations and Traffic Management; Safety and Human Factors; Society; I73: Traffic Control;

Filing Info

• Accession Number: 00741431
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 21 1997 12:00AM