EVALUATION OF A NEW MODAL SPLIT PROCEDURE AND DISCUSSION

URBAN TRANSPORTATION PLANNING REQUIRES SOUND ESTIMATES OF TRANSIT PATRONAGE. THE NATIONAL CAPITAL TRANSPORTATION AGENCY MODAL SPLIT PROCEDURE FOR ESTIMATING THE RELATIVE USAGE OF PRIVATE AND PUBLIC TRANSPORTATION WAS TESTED TO DETERMINE ITS ABILITY TO REPRODUCE THE KNOWN TRANSIT USAGE SITUATION REPORTED IN THE 1955 WASHINGTON ORIGIN AND DESTINATION SURVEY. THE SENSITIVITY OF THIS MODAL SPLIT PROCEDURE TO CHANGES IN THE INPUT PARAMETERS WAS ALSO TESTED THE EVALUATION TENDED TO CONFIRM THE USEFULNESS OF THE NEW PROCEDURE, BUT ALSO REVEALED CERTAIN LIMITATIONS. SENSI- TIVITY TESTS SHOWED THAT SUBSTANTIAL WEIGHT IS GIVEN TO CERTAIN INPUT VARIABLES THAT ARE DIFFICULT TO ESTIMATE. CERTAIN IMPROVEMENTS ARE RECOMMENDED. THE RESULTS OF THE ANALYSIS FOR COMBINED VARIABLES SHOWED THE SAME KEY TRENDS AS THE ANALYSIS OF INDIVIDUAL VARIABLES. THESE KEY TRENDS WERE THAT /A/ THE LEVEL OF SERVICE RATIO FAR OUTWEIGHS THE OTHER VARIABLES IN IMPORTANCE, /B/ THE COST RATIO PLAYS A MINOR ROLE, AND /C/ THE TRAVEL TIME RATIO EXHIBITS ADEQUATE SENSITIVITY OVER ITS ENTIRE RANGE.

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  • Authors:
    • Sosslau, Arthur B
    • Heanue, Kevin E
    • Balek, Arthur J
  • Discussers:
    • Deen, Thomas B
    • Mertz, William L
    • Wickstrom, George B
  • Publication Date: 1965

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 44-68
  • Monograph Title: Travel patterns
  • Serial:

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Filing Info

  • Accession Number: 00240809
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 1 1994 12:00AM