DYNAMIC SPEED ADAPTATION BASED ON INFORMATION TECHNOLOGY

Compliance with the speed limit is low and the average speeds are higher than the speed limit on almost all types of roads in Sweden. The relationship between speed and accidents has been proven in several studies. A better compliance with the speed limits would provide significant safety improvements. The general speed limit on the road system is rigid and inappropriate in many critical situations which demand speed adaptation below the speed limit. Speed limits are meant to display the highest allowed speed in normal road and visibility conditions. However, there are some indications that drivers do not lower their speeds during adverse conditions, but rather follow the speed limits, which is an indication of unfavorable behavior in the form of delegation of responsibility. Differentiated speed limits, theoretically, might be an effective measure against inappropriate speeds in different critical situations. One solution to the speed problem is to get to the vehicle to control its speed directly. A system which automatically adapts the speed of the vehicle to the prevailing conditions, could bring about the same effects as the best traditional measures, and at the same time compensation could be prevented to a large extent. ATT (Advanced Transport Telematics) offers the possibility of realizing such a system with automatic speed limiting and speed adaptation in different critical situations. ATT systems have great safety potential, especially systems intervening in driver behavior. Informative systems have much smaller effects on safety than intervening systems. At the same time, the acceptance (before trying out such equipment) is higher for those with informative functions. The highest appropriate speeds in different traffic environments could be managed by simple speed limiters in cars and adaptation to changing conditions by a dynamic system based on "intelligent" speed limiters.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1102626X
• Corporate Authors:

  PTRC Education and Research Services Limited

  Glenthorne House, Hammersmith Grove
  London W6OL9,   England 
• Authors:
  • VARHELYI, A
• Conference:
  • Traffic Safety on Two Continents
  • Location: Malmo, Sweden
  • Date: 1999-9-20 to 1999-9-22
• Publication Date: 1998

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 19-34
• Serial:
  • Publication of: Swedish National Road and Transport Research Institute
  • Publisher: Swedish National Road and Transport Research Institute (VTI)

Subject/Index Terms

• TRT Terms: Advanced vehicle control systems; Information technology; Intelligent transportation systems; Speed control; Speed limits
• Uncontrolled Terms: Speed limiters
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00767324
• Record Type: Publication
• Report/Paper Numbers: VTI konferens 9A part 7
• Files: TRIS, ATRI
• Created Date: Aug 2 2000 12:00AM