TRAFFIC SPEEDS ON STEEP GRADIENTS ON RURAL SINGLE- CARRIAGEWAY ROADS

The article describes a study of vehicle speeds on steep sections of two roads having one carriageway. In one case there was no lane for slow-moving large vehicles, and in the other case a third lane was provided. When there was no crawler lane 32 per cent of cars were forced to form queues behind slow-moving heavily laden lorries; average speeds of these cars were about 55 percent lower than those of cars which could travel unhindered on the gradient. These speed restrictions did not occur on carriageways where a third lane was provided. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
• Corporate Authors:

  Printerhall Limited

  29 Newmart Street
  London W1P 3PE,   England 
• Authors:
  • Ackrayd, L W
• Publication Date: 1974-8-9

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 766-799
• Serial:
  • Traffic Engineering & Control
  • Volume: 15
  • Issue Number: 16/1
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Climbing lanes; Highway grades; Rural highways; Slopes; Speed; Traffic delays; Traffic lanes; Traffic speed; Trucks
• Uncontrolled Terms: One
• Old TRIS Terms: Climbing performance
• ITRD Terms: 2992: Carriageway; 2808: Climbing lane; 2806: Gradient; 1236: Lorry; 9054: One; 5408: Speed
• Subject Areas: Highways; Motor Carriers; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00096736
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1975 12:00AM