THE INFLUENCE OF SNOW AND ICE ON THE LEVEL OF SERVICE OF VEHICULAR TRAFFIC

VAEGLAGETS INVERKAN PAA BILTRAFIKENS FRAMKOMLIGHET

To a large extent, the behaviour of vehicle drivers can depend on the prevailing road conditions. To examine this, traffic measurements have been performed in different road conditions, respectively dry, snowy or icy surfaces. The investigation was performed in two rather heavily trafficked streets on Hisingen Island, Gothenburg, during the winters 1986 and 1987. The investigation was divided into three parts: 1.Measurement of traffic flows. 2.Measurement of vehicle speeds. 3.Measurement of time headways. The evaluation of the different measurements indicates that the drivers take the road condition into consideration when choosing the time headway to the leading vehicle; at least for headways less than 6 seconds, i.e. one chooses greater headways when driving on snowy or icy roads. The snow and flow measurements were too few to indicate any dependance.

• Corporate Authors:

  Chalmers University of Technology, Sweden

  Institutionen foer Vaegbyggnad
  S-402 20 Goeteborg 5,   Sweden 
• Authors:
  • Hajjari, P
  • Oshagh-Madani, A
• Publication Date: 1987

Language

• Swedish

Media Info

• Pagination: 27 p.
• Serial:
  • CTH Vaegbyggnad Examensarbete
  • Publisher: Chalmers University of Technology, Sweden

Subject/Index Terms

• TRT Terms: Behavior; Drivers; Headways; Icy roads; Snow; Speed; Traffic flow; Traffic surveys; Urban areas
• Subject Areas: Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00605837
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: 1987:8
• Files: ITRD, TRIS
• Created Date: Mar 31 1991 12:00AM