OPERATIONAL PLANNING OF FIXED-ROUTE AND DEMAND-RESPONSIVE BUS SYSTEMS IN GREATER LAFAYETTE AREA

MANY SMALL URBAN AREAS IN THE UNITED STATES ARE TRYING TO REVIVE THEIR BUS PUBLIC TRANSPORTATION. SOME OF THEM ARE INTENDING TO IMPLEMENT, IN ADDITION TO THE COVENTIONAL BUS SYSTEM, A NEW BUS SYSTEM THAT HAS CLOSE ATTRIBUTES TO THE AUTOMOBILE, A DEMAND -RESPONSIVE SYSTEM KNOWN AS DIAL-A-RIDE. THE GREATER LAFAYETTE AREA IN INDIANA, IS ONE OF THESE SMALL URBAN AREAS. THIS RESEARCH SUGGESTS THE PROPER COMBINATION OF TWO BUS MODES, THE FIXED -ROUTE AND THE DEMAND-RESPONSIVE BUS SYSTEMS, THAT BEST SERVES THE VARIOUS DEMAND LEVELS AT A LEVEL OF SERVICE REQUIRED BY THE CUSTOMER, USING GREATER LAFAYETTE AREA AS A CASE STUDY. A SIMPLIFIED PROCEDURE WAS DEVELOPED TO DESIGN THE FIXED ROUTE OF THE BUS SYSTEM OF THE GREATER LAFAYETTE AREA. FIFTEEN BUSES OF 25 TO 30 PASSENGER SEATS RUNNING AT HALF HOUR HEADWAYS ARE NEEDED TO PROVIDE A MEAN LEVEL OF SERVICE OF 2.3 TO 2.5 TIMES THE MEAN AUTO TRAVEL TIME. THE LEVEL OF SERVICEWAS MEASURED BY THE TOTAL TIME SPENT BY THE USERS ON THE BUS SYSTEM. COMPUTER SIMULATION WAS USED TO DUPLICATE THE OPERATIONS OF THE DIAL-A-RIDE SYSTEM IN A REAL ENVIRONMENT. THE SYSTEM OPERATES ON MANY-TO-MANY BASIS (MANY ORIGINS TO MANY DESTINATIONS) WITH COMPUTER DISPATCHING. THE NUMBER OF SMALL BUSES NEEDED TO SATISFY THE DEMAND LEVELS OF 30 CALLS PER HOUR TO 150 CALLS PER HOUR TO 150 CALLS PER HOUR HAD BEEN INVESTIGATED FOR DIFFERENT LEVELS OF SERVICE. COST COMPARISONS OF THE TWO SYSTEMS PROVIDED THE FEASIBLE OPERATION OF THE TWO BUS MODES FOR VARIOUS DEMAND LEVELS UNDER THE SAME LEVEL OF SERVICE. THE RESULTS SHOW THAT THE FIXED-ROUTE SYSTEM BEST SERVES THE HIGH DEMANDS, DEMANDS THAT ARE GREATER THAN 90 PERSONS PER HOUR. THE DAIL-A-RIDE SYSTEM BEST SERVES THE LOWER DEMANDS, DEMANDS OF 90 CALLS PER HOUR AND LESS. NO GENERALIZATION OF THE RESULTS COULD BE REACHED AT THIS POINT IN TIME, EXCEPT FOR SMALL URBAN AREAS SIMILAR IN SIZE AND IN STRUCTURE TO GREATER LAFAYETTE AREA.

  • Supplemental Notes:
    • PROJ NO C-36-74D 4 APP
  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284
  • Authors:
    • Hobeika, A G
  • Publication Date: 1973-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 209 p.
  • Serial:
    • Issue Number: 22

Subject/Index Terms

Filing Info

  • Accession Number: 00242738
  • Record Type: Publication
  • Report/Paper Numbers: Final Rept
  • Files: TRIS
  • Created Date: Jul 16 1982 12:00AM