TRANSPORTATION SYSTEMS IN THE FUTURE DEVELOPMENT OF METROPOLITAN AREAS: THE PERMANENT CORRIDOR CONCEPT

IT IS EXPECTED THAT 85 PERCENT OR MORE OR THE POPULATION WILL RESIDE IN URBAN AREAS BY THE TURN OF THE CENTURY, AND IT IS MANDATORY THAT TRANSPORTATION NETWORKS IN METROPOLITAN REGIONS BE ESTABLISHED AND THE LAND FOR THEM BE RESERVED NOW IN ORDER TO SERVE THE TRAVEL REQUIREMENTS IN THE FUTURE. THIS CANNOT BE EFFECTIVELY ACCOMPLISHED ON THE BASIS OF CURRENT PRACTICE. THIS PAPER DEVELOPS A CONCEPT OF PERMANENT TRANSPORTATION CORRIDORS AND NETWORK CONFIGURATIONS THAT ALLOW FOR LONG-RANGE PLANNING. IT INDICATES THAT AN OPTIMUM NETWORK OF MAJOR TRANSPORTATION FACILITIES, INITIALLY SPACED AT 4 TO 6 MILES AND EVENTUALLY SPACED AT 2 TO 3 MILES IN BUILT-UP AREAS, CAN FUNCTION INTO THE FUTURE AT REASONABLE LEVELS OF SERVICE FOR ANY PREDICTED RATES OF POPULATION GROWTH, URBAN AREA EXPANSION, AND INCREASES TRAVEL DEMAND. THE CONCEPT PROVIDES FOR MAJOR TRANSPORTATION CORRIDORS THAT FORM THE FRAMEWORK FOR ALL URBAN DEVELOPMENT. THE CORRIDORS ARE PERMANENT, BUT THE FACILITIES WITHIN THE CORRIDORS ARE NOT. THE CORRIDORS ARE ESTABLISHED AT SUFFICIENT WIDTH AND APPROPRIATE SPACING SO THAT THEY ARE (1) CAPABLE OF ACCOMMODATING TRAVEL GENERATED BY LIKELY FUTURE POPULATION DENSITIES AND OF ALLOWING BALANCED TRANSPORTATION SERVICE, (2) ADAPTABLE TO DESIGN OR REDESIGN TO CARRY A FREEWAY, A RAPID TRANSIT FACILITY, OR A COMBINATION OF THE TWO, AND (3) CAPABLE OF CONVERSION IN THE FUTURE TO MEET THE DESIGN REQUIREMENTS OF NEW TECHNOLOGICAL DEVELOPMENTS. THE APPLICATION OF THIS CONCEPT COULD RESOLVE THE URBAN PLANNING DILEMMA THAT SEEMS INSURMOUNTABLE. /AUTHOR/

  • Record URL:
  • Supplemental Notes:
    • Paper sponsored by Department of Urban Transportation Planning and presented at the 48th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Authors:
    • Leisch, Jack E
  • Discussers:
    • Bakker, J J
  • Publication Date: 1969

Media Info

  • Media Type: Print
  • Features: Appendices; Figures; References; Tables;
  • Pagination: pp 83-101
  • Monograph Title: Transportation systems planning
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00239238
  • Record Type: Publication
  • Report/Paper Numbers: No. 274
  • Files: TRIS, TRB
  • Created Date: Mar 9 1970 12:00AM