VARICOM TRAFFIC CONTROL AND COMMUNICATION SYSTEM

BASIC PREMISES INHERENT IN CHANGEABLE MESSAGE SIGN DEVELOPMENT ARE REVIEWED: (1) USING FAIL-SAFE DEVICES IN CASE OF A POWER FAILURE, (2) RESISTING VANDALISM, (3) OPERATING UNDER ALL WEATHER CONDITIONS, (4) FOLLOWING SPECIFICATIONS FOR DISPLAYS AND LETTER TYPE, ETC., AND (5) OPERATING AND MAINTENANCE COSTS, INCLUDING THE COST OF ELECTRICITY. HOW VARICOM, A TRAFFIC CONTROL AND COMMUNICATION SYSTEM, UTILIZED THESE PREMISES INTO CONSTRUCTING A COMPACT SYSTEM IS DESCRIBED. THE VARICOM RESEMBLES A SPEED LIMIT SIGN; IT HAS 2 HOUSINGS - THE LOWER CONTAINS THE THERMOELECTRIC GENERATOR AND THE UPPER IS THE CABINET FOR THE SIGN ITSELF. ALL OF THE FUNCTIONAL ELEMENTS OF THE LINE-POWERED UNIT ARE CONTAINED WITHIN THE SIGN CABINET: THE FLASHING-LIGHT ASSEMBLY IS AT THE TOP; THE RADIO OR LINE COMMUNICATIONS EQUIPMENT IS ON THE LEFT SIDE; THE LOGIC PACKAGE IS SUSPENDED FROM THE TOP; THE DRIVE TRAIN, WITH A REVERSIBLE 12-V DC MOTOR, IS ON THE RIGHT SIDE; THE CAM ASSEMBLY IS ON THE RIGHT SIDE OF THE TOP DRUM; THE STORAGE BATTERY IS ON THE BOTTOM RIGHT SIDE; AND THE HEAT SOURCE IS AT THE BOTTOM OF THE CABINET, BENEATH THE MESSAGE WINDOW. BECAUSE THE COMMUNICATION LINK MAY BE EITHER RADIO OR HARD WIRE, THE VARICOM CAN ACCOMODATE A MOTORIST- AID PHONE. ALTHOUGH INITIAL COSTS VARY DEPENDING ON THE KIND OF INSTALLATION, THE TYPICAL COST FOR A LIMITED NUMBER OF UNITS USING LINE POWER AND LINE COMMUNICATIONS IS APPROXIMATELY $10,000.

Media Info

  • Media Type: Print
  • Pagination: p. 29-32
  • Monograph Title: THE CHANGEABLE-MESSAGE CONCEPT OF TRAFFIC CONTROL
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00226392
  • Record Type: Publication
  • ISBN: 0309020530
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 17 1973 12:00AM