CAPACITY ANALYSIS AND DESIGN PRACTICE FOR UNSIGNALIZED AT-GRADE INTERSECTIONS IN FINLAND

The Finnish design practice for unsignalized intersections is divided into three categories according to the type of road environment: urban, rural built-up, and rural. The Finnish National Road Administration (FinnRA) has worked out design guidelines for each of these categories. In addition, the cities also use guidelines of their own. FinnRA guidelines for at-grade intersections will be updated in the near future. In recent years capacity and design studies have mainly concentrated on roundabouts. As a result, a new type of roundabout has been introduced in the guidelines with good results. In the future one of the main fields in capacity research will be the development and updating of present capacity calculation methods and base values, although no decisions concerning a new capacity model have been made. In addition, simulation of unsignalized junctions will be an important area of research, in which further calibration and validation of the Finnish HUTSIM program will be an essential part.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  National Institute for Advanced Transportation Technology

  University of Idaho, Moscow
  115 Engineering Physics Building
  Moscow, ID  United States  83844-0901

  TransNow, Transportation Northwest

  University of Washington, Department of Civil Engineering
  129 More Hall, Box 352700
  Seattle, WA  United States  98195-2700
• Authors:
  • Pursula, M
  • Peltola, V
• Conference:
  • Third International Symposium on Intersections Without Traffic Signals
  • Location: Portland, Oregon
  • Date: 1997-7-21 to 1997-7-23
• Publication Date: 1997-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 197-205

Subject/Index Terms

• TRT Terms: At grade intersections; Design; Environmental quality; Highway capacity; Intersections; Roadside; Roundabouts; Unsignalized intersections
• Uncontrolled Terms: Design features; Intersection capacity
• Subject Areas: Design; Environment; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00742508
• Record Type: Publication
• Files: TRIS, TRB, USDOT
• Created Date: Nov 5 1997 12:00AM