AUTOMATIC VEHICLE MONITORING TECHNOLOGY REVIEW

THIRTY ALTERNATE TECHNOLOGIES WERE REVIEWED, EMBRACING EIGHT GENERIC SYSTEM CONFIGURATIONS: (1) DEAD RECKONING, IN WHICH SPEED AND HEADING INFORMATION ARE INTEGRATED TO OBTAIN LOCATION AS A FUNCTION OF TIME FROM A KNOWN STARTING POINT; (2) PHASE TRILATERATION, IN WHICH THE VEHICLE EMITS AN RF CARRIER FREQUENCY MODULATED BY AN AUDIO TONE WHICH IS MEASURED AT DISPERSED STATIONS TO YIELD VEHICLE LOCATION; (3) LORAN (LONG-RANGE NAVIGATION) TECHNIQUES; (4) PROXIMITY SYSTEMS, IN WHICH ON-BOARD RECEIVERS IDENTIFY LOCATION AS VEHICLE PASS "SIGNPOST" TRANSMITTERS (5) INVERTED PROXIMITY SYSTEMS, IN WHICH THE VEHICLE TRANSMITS ITS LOCATION TO DISPERSED "SIGNPOST" RECEIVERS; (6) PULSE TRILATERATION; (7) TRIANGULATION, IN WHICH THE BEARING ANGLES OF RF PROPAGATION FROM A VEHICLE TO FIXED RECEIVER SITES ARE MEASURED; AND (8) A MISCELLANEOUS CATEGORY, PRIMARILY FOR NONAUTOMATED SYSTEMS ALL PROPOSED AVM DESIGNS ARE DESCRIBED WITH REFERENCE TO COMPONENT STATE-OF-THE-ART AND THEIR RELATIVE ADVANTAGES AND DISADVANTAGES. THE REPORT CONCLUDES THAT OVERALL TECHNOLOGY DEVELOPMENT WAS INSUFFICIENT TO PERMIT SELECTION OF AN OPTIMUM AVM SYSTEM. AVAILABLE DATA DID NOT ADEQUATELY QUANTIFY THE COST TRADE-OFFS AMONG VARIOUS SYSTEM DESIGNS. HOWEVER, BASED UPON THE REVIEW OF RFP RESPONSES, THE REPORT IDENTIFIED FOUR TECHNOLOGIES AS SUFFICIENTLY PROMISING TO WARRANT FURTHER EVALUATION: (1) A LORAN-C SYSTEM; (2) A PHASE RANGING SYSTEM CONSTRAINED TO CONVENTIONAL MOBILE CHANNEL AND UTILIZING MULTIPLE RECEIVING SITES; (3) A PHASE RANGING SYSTEM USING A WIDE DEVIATION SIGNAL AND FEWER RECEIVING SITES; AND (4) AN X-BAND PROXIMITY SYSTEM /UMTA/

• Supplemental Notes:
  • PROJ NO TRD-90
• Corporate Authors:

  MITRE Corporation

  Bedford, MA  United States 
• Authors:
  • Roth, S H
• Publication Date: 1971-8

Subject/Index Terms

• TRT Terms: Automatic vehicle monitoring; Buses; Communication systems; Feasibility analysis; Location; Monitoring; Motor vehicles; State of the art studies; Technology
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 00226492
• Record Type: Publication
• Source Agency: Urban Mass Transportation Administration
• Files: TRIS, USDOT
• Created Date: Oct 15 1972 12:00AM