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FURTHER ANALYSES OF THE "PASSENGER FLOW IMPROVEMENT" (PFI) AND "DART" CONCEPTS AS EVOLUTIONARY IMPROVEMENTS IN URBAN TRANSPORTATION SYSTEMS

THE PURPOSE OF THIS STUDY IS TO ARRIVE AT A GREATER UNDERSTANDING OF THE GENERAL PROBLEM OF TRAFFIC CONTROL AND TO PROPOSE ANOTHER APPROACH TO THE AMELIORATION OF THIS PROBLEM. PREVIOUS PROPOSALS ARE REVIEWED AND DISCOUNTED. THE DART (DEMAND ACTUATED ROAD TRANSIT) CONCEPT IN LOW DENSITY METROPOLITAN AREAS IS INVESTIGATED. DART CONSISTS OF A FLEET OF SMALL BUSES EQUIPPED WITH TWO-WAY RADIOS; A CENTRAL DISPATCHING SYSTEM EQUIPPED WITH A CENTRAL TRANSCEIVER AND A DIGITAL COMPUTER; AND WIDELY-DISPERSED TELEPHONE SYSTEM. WHAT IS NEW IS THE COMBINATION OF ADVANCED ELECTRONIC TECHNIQUES OF COMMUNICATION AND DATA PROCESSING TOGETHER WITH A MATHEMATICALLY-BASED DISPATCHING OPERATION. THE NET RESULT IS A SYSTEM WHICH, UNDER A VARIETY OF OPERATION CONDITIONS, CAN GIVE TAXI-LIKE, DOOR-TO-DOOR SERVICE AT A PRICE CLOSE TO THE BUS. THE SYSTEM MAY INCLUDE AN AUTOMATIC VEHICLE MONITOR (AVM) WHICH CONTINUOUSLY INFORMS THE CENTRAL DISPATCHER WHERE ALL THE DARTS ARE. THE AVM MAY REDUCE THE COST OF OPERATING DART BY AS MUCH AS 50 PERCENT, DEPENDING ON THE OPERATING POLICY, THE DENSITY OF DEMAND, AND THE SIZE OF THE AREA. ANOTHER OPTION, WHICH MAY BE AN INTEGRAL PART OF THE AVM, IS A DEVICE FOR NOTIFYING THE PASSENGER THAT HE WILL BE PICKED UP PRESENTLY; THIS DEVICE CAN LOWER THE COST OF DART SERVICE BY ABOUT 10 PERCENT. THE REGULATORY PROBLEMS GENERATED BY SUCH A SYSTEM ARE ALSO REVIEWED. /UMTA/

  • Supplemental Notes:
    • PROJ NO NSS-15
  • Corporate Authors:

    Melpar, Incorporated

    Falls Church, VA  United States 
  • Publication Date: 1968-1

Subject/Index Terms

Filing Info

  • Accession Number: 00226463
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Files: TRIS, USDOT
  • Created Date: Jan 17 1982 12:00AM