GEOMETRIC DESIGN STANDARDS FOR HIGH-SPEED FREEWAYS AND FREEWAY INTERCHANGES

IN 1970 THE INTERNATIONAL ROAD FEDERATION CONSIDERED MAKING A STUDY OF THE GEOMETRIC DESIGN OF FREEWAYS DESIGNED FOR SPEEDS OF 80 MPH AND ABOVE AND OF THE INTERCHANGES BETWEEN SUCH FREEWAYS AND OTHER ROADS. PRIOR TO MAKING THE STUDY, HOWEVER, THE IRF REQUESTED A REVIEW OF STANDARDS IN THOSE EUROPEAN COUNTRIES SHOWING THE GREATEST INTEREST AND ACTIVITY IN THIS REGARD, VIZ., BELGIUM, FRANCE, GERMANY, ITALY, THE NETHERLAND, SPAIN, AND THE UNITED KINGDOM. RESULTS WERE AS FOLLOWS. IT IS UNLIKELY THAT BELGIUM WILL ADOPT A DESIGN SPEED HIGHER THAN 75 MPH. FRANCE HAS PUBLISHED CIRCULARS AND STANDARDS FOR TWO CLASSES OF FREEWAYS, DESIGNED TO 62.5 AND 87.5 MPH. WEST GERMAN DESIGN STANDARDS ARE AT PRESENT UNDER REVISION, BUT AN OUTLINE OF THE STANDARDS LIKELY TO BE ADOPTED WAS FURNISHED FOR DESIGN SPEEDS OF 49.7, 62.5, 74.6, AND 87.5 MPH. THE 1964 ITALIAN STANDARDS ARE ALSO BEING REVISED, BUT NO INDICATION WAS GIVEN BY THE RESPONSIBLE COMMISSION THAT THE PRESENT MAXIMUM OF 75 MPH WOULD BE RAISED. EXISTING STANDARDS FOR THE NETHERLANDS, WHICH ARE UNLIKELY TO BE ALTERED, SPECIFY CHARACTERISTICS (REPRODUCED IN THIS ARTICLE) FOR 74.6 MPH. NO NEW MATERIAL IS BEING PREPARED BY SPAIN, WHICH HAS DESIGN STANDARDS FOR 62.5 AND 74.6 MPH. THE SAME IS TRUE FOR THE UNITED KINGDOM, WHERE THE HIGHEST DESIGN SPEED IS 70 MPH. IT IS CONCLUDED THAT ONLY IN FRANCE AND GERMANY DOES IT APPEAR USEFUL TO PURSUE THE INVESTIGATION PLANNED BY THE IRF.

  • Corporate Authors:

    International Road Federation

    525 School Street, SW
    Washington, DC  USA  20024

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Mcivor, G A
  • Publication Date: 1970-12

Subject/Index Terms

Filing Info

  • Accession Number: 00203518
  • Record Type: Publication
  • Report/Paper Numbers: pp 551-555
  • Files: TRIS, USDOT
  • Created Date: Feb 8 1971 12:00AM