An electonic license plate system is proposed which reportedly would cost only a few dollars when manufactured in quantity, and which would perform the following three basic functions: (1) responding with a vehicle's identifying code number when electronically interrogated; (2) receiving and transmiting radio messages to and from a vehicle; and (3) serving as a transponder for use in a cooperative collision avoidance radar. The heart of the electronic license plate is a sophisticated antenna system capable of receiving radio signals at one frequency and rebroadcasting the signals at double that frequency. The addition of an integrated circuit coder would enable the license plate to transmit an electronic signal that distinctly identifies the vehicle carrying it. The main components of the electronic license plate are described as a "printed-circuit antenna covered by a visual display of the license number of the vehicle, a frequency doubler, a modulator, and an rf detector." It would be 12 in. long, 6 in. high, and about a half inch thick.

Media Info

  • Features: Photos;
  • Pagination: p. 18-19
  • Serial:
    • Automotive Engineering
    • Volume: 82
    • Issue Number: 10
    • Publisher: Society of Automotive Engineers (SAE)
    • ISSN: 0098-2571

Subject/Index Terms

Filing Info

  • Accession Number: 00262795
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM