A NEW LOOK AT MOTORIST AID SYSTEMS: 450 MEGAHERTZ

DURING 1970 THE FEDERAL COMMUNICATIONS COMMISSION PUBLISHED DOCKET 19001, WHICH SETS ASIDE FOUR PAIRS OF 453- AND 458-MHZ FREQUENCIES FOR A MOTORIST AID SYSTEM CAPABLE OF HANDLING TWO-WAY VOICE DUPLEX COMMUNICATIONS WITH A TONE ON THE CARRIER FOR BOX LOCATION IDENTIFICATION, STATUS OF BATTERY LIFE, SECURITY CONDITIONS, INTERROGATION FUNCTION, TRAFFIC CONTROL, TRAFFIC COUNTING, AND REMOTE CONTROL OF CHANGEABLE MESSAGE SIGNS. THE PROVISIONS OF THE DOCKET AND THE AVAILABLE TECHNOLOGY TO TAKE ADVANTAGE OF IT ARE DISCUSSED IN DETAIL, ALONG WITH SYSTEM OPERATIONAL CHARACTERISTICS.

• Supplemental Notes:
  • 13 Pp, 2 ApP
• Authors:
  • Grafe, R W
• Publication Date: 1971-12

Media Info

• Serial:
  • Am Assoc State Highway Officials Proc

Subject/Index Terms

• TRT Terms: Communication; Communication systems; Disasters and emergency operations; Drivers; Hazards and emergency operations; Motorist aid systems; Radio; Remote control; Speech; Telephone; Traffic control; Traffic counting; Variable message signs; Voice communication
• Old TRIS Terms: Two way communication
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226158
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 23 1972 12:00AM