The speed prediction model for heavy vehicles

The speed prediction model for heavy vehicles is based on a large quantity of GPS speed reported data and geometry data made available from the National Road Data Bank by the Norwegian Public Roads Administration. The speed prediction model uses geometry variables to calculate realistic speed, and could be included in any route guidance system, and also potentially be combined with and make use of other more dynamic data. The speed prediction model is now going to be implemented in a range of systems, including the national freight transport model, the CBA tool used by the Norwegian Public Roads Administration, and heavy traffic information system including a route guidance system in which route choice algorithms are based on realistic speed prediction provided by the model described here. The speed prediction can be updated on the way if some of the dynamic conditions changes. The model will also provide valuable information to planning activities within the road administration, in giving input to design conditions, maintenance operations (like frequency) and accident prevention. The speed is calculated in steps and each step has a sub model. The starting point is the chosen speed on flat straight roads. This is reduced as a consequence of narrow roads, small horizontal radiuses, or roads going uphill or downhill. The sub model calculating resulting speed from uphill vertical curvature uses total weight and motor engine power as input. If such data are not available, average values are used. Norway is a country with hills and fjords, which have given challenging road curvature, especially on rural roads. Use of the model for the Norwegian road network is necessary in route choice algorithms, in order to get realistic speed predictions, but could also be valid for other countries.

• Record URL:
  • https://aetransport.org/past-etc-papers/conference-papers-2011
• Supplemental Notes:
  • Abstract used by permission of Association for European Transport.
• Corporate Authors:

  Association for European Transport (AET)

  1 Vernon Mews, Vernon Street, West Kensington
  London W14 0RL,    
• Authors:
  • Torset, Trude
• Conference:
  • European Transport Conference 2011
  • Location: Glasgow , Scotland
  • Date: 2011-10-10 to 2011-10-12
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 12p
• Monograph Title: European Transport Conference 2011: Seminars

Subject/Index Terms

• TRT Terms: Algorithms; Design speed; Geometric design; Heavy vehicles; Mathematical models; Mathematical prediction; Route choice; Speed
• Uncontrolled Terms: Speed prediction models
• Geographic Terms: Norway
• Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01493501
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 20 2013 4:19PM