A METHOD FOR ESTIMATING THE IMPACT OF TRAVEL TIME OR COST CHANGES ON DIVERSION OF CAR DRIVERS TO TRANSIT: WORK TRAVEL TO THE CENTRAL BUSINESS DISTRICT PATTERNS OF CAR OWNERSHIP, TRIP GENERATION AND TRIP SHARING IN URBANIZED AREAS

A SHORTCUT FORMULA HAS BEEN DEVELOPED TO ESTIMATE DIVERSION OF CAR DRIVERS AND PASSENGERS TO BUS TRANSIT THROUGH VARIOUS COST OR TIME IMPROVEMENTS TO THE TRANSIT SYSTEM. THE FORMULA RELATED ONLY TO DIVERSION OF CAR DRIVERS TO TRANSIT, BASED ON THE EFFECTIVE COST DIFFERENCE FOR TRAVEL BY EACH MODE BETWEEN PARTICULAR ZONE-PAIRS, AND CANNOT BE USED TO ESTIMATE POTENTIAL INCREASES IN TRANSIT TRIP-MAKING BY PERSONS WHO DO NOT NOW TRAVEL OR WHO PRESENTLY USE ONLY TRANSIT. ADDITIONALLY, THE FORMULA APPLIES TO TRIPS MADE BETWEEN HOME AND PLACE OF WORK IN THE CENTRAL BUSINESS DISTRICT OR SIMILAR HEAVY CONCENTRATION OF TRANSIT DESTINATIONS. BASED ON THE PERCENTAGES FOR ALL CAR- OWNERS WHO USE TRANSIT TO TRAVEL TO WORK, ADDITIONAL DIVERSION OF DRIVERS IS ESTIMATED BY USING A CURVE TO MEASURE THE EFFECT OF (1) TRANSIT COST REDUCTIONS OF DIFFERENT AMOUNTS, WITHOUT TIME SAVINGS, (2) TIME SAVINGS WITHOUT ANY REDUCTION IN DIRECT TRIP COSTS, AND (3) JOINT REDUCTION OF TRIP COSTS AND TRAVEL TIME. ADDITIONAL DATA DEVELOPED IN THE STUDY CONCERNING CAR OWNERSHIP, TRIP GENERATION, AND TRIP SHARING ARE ALSO PRESENTED. /BPR/

  • Corporate Authors:

    Smith, Wilbur & Associates

    ,    

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Publication Date: 1968-6

Subject/Index Terms

Filing Info

  • Accession Number: 00227508
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Report/Paper Numbers: Cpr-11-2849
  • Files: TRIS
  • Created Date: Aug 15 2004 2:01AM