GEOMETRIC DESIGN FOR INTERURBAN ROADS. SINO-BRITISH HIGHWAYS AND URBAN TRAFFIC CONFERENCE. PAPERS PRESENTED AT THE CONFERENCE HELD IN BEIJING 17TH-22ND NOVEMBER 1986

This paper introduces two contrasting techniques for evaluating the effects of geometric parameters on vehicle operation, and describes two studies, using these techniques, which were intended to provide a greater appreciation of the effects of varying standards. The first study was empirical, and collected information about the performance of vehicles and drivers under normal road conditions. It discovered a very clear relationship between approach speed, band speed, and curve radius; this type of relationship varies with geometric characteristics such as width and surface condition. Factors such as sight distance are sometimes also relevant. The second study relates to the development of a microscopic simulation model to consider the ways in which vehicle speeds vary with flow and geometry. The simulation was specifically related to rural road conditions where vehicle performance is subject to considerable variability, as happens in many developing countries. The principal area of improvement to low flow roads will be to their alignment and surface quality. On high flow roads, it will be possible to increase road space by providing additional lanes. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05379989
• Corporate Authors:

  INSTITUTION OF HIGHWAYS & TRANSPORTATION

  6 ENDSLEIGH STREET
  LONDON,   United Kingdom  WC1H 0DZ
• Authors:
  • McDonald, M
  • BOYCE, A M
• Publication Date: 1986

Media Info

• Features: References;
• Pagination: p. 117-124
• Serial:
  • Publication of: INSTITUTION OF ELECTRICAL ENGINEERS
  • Publisher: Institution of Electrical Engineers
  • ISSN: 0537-9989

Subject/Index Terms

• TRT Terms: Conferences; Curvature; Highways; Layout; Mathematical models; Rural areas; Simulation; Speed; Traffic flow; Traffic lanes; Variables; Vehicles; Visibility distance; Width
• ITRD Terms: 8525: Conference; 2870: Degree of curvature; 1855: Driving (veh); 2755: Highway; 2885: Layout; 6473: Mathematical model; 328: Rural area; 9103: Simulation; 5408: Speed; 671: Traffic flow; 2827: Traffic lane; 9086: Variability; 1255: Vehicle; 6793: Visibility distance; 6479: Width
• Subject Areas: Design; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00493107
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM