HIGHWAY COMMUNICATION USING WIDE-BAND CABLE AND INDUCTIVE TRANSMISSION METHODS

PROBLEMS ARE PRESENTED BY THE SHORTAGE OF AVAILABLE RADIO CHANNELS, IF CONVENTIONAL SPACE-WAVE PROPAGATION MODES ARE TO BE USED ON AN EXTENSIVE BASIS, IN ESTABLISHING NEW COMMUNICATION AND CONTROL FACILITIES ON INTERSTATE HIGHWAYS TO ENHANCE SAFETY AND EFFICIENTY OF OPERATION. THE NEED FOR AN INTERGRATED-SYSTEM APPROACH TO ATTAIN MAXIMUM EFFICIENCY IN THE USE OF THE RADIO SPECTRUM, AND ADAPTABILITY TO ORDERLY EXPANSION BY COMPATIBLE STAGES IN ACCOMMODATING FUTURE FUNCTIONS SUCH AS THOSE INVOLVED IN THE AUTOMATIC-HIGHWAY CONCEPT ARE EMPHASIZED. A REVIEW OF PROPOSED HIGHWAY COMMUNICATION, SURVEILLANCE, AND CONTROL FUNCTIONS INDICATES FUTURE REQUIREMENT FOR A VERY SUBSTANTIAL BANDWIDTH IN THE RADIO-FREQUENCY SPECTRUM, AS WELL AS THE NEED FOR LOCALIZING AND AIMING SIGNALING FIELDS TO MINIMIZE INTERFERENCE DIFFICULTIES. COAXIAL-CABLE SYSTEMS, WITH ROADSIDE TRANSMISSION FACILITIES POSITIONED BELOW GROUND LEVEL, ARE PROPOSED IN LIEU OF MICROWAVE OR OTHER RADIO-RELAY TECHNIQUES FOR A NUMBER OF POINT-TO-POINT COMMUNICATION AND CONTROL FUNCTIONS. THE BASIS IS THE NEED FOR A BROADBAND FACILITY TO ACCOMMODATE THE LARGE NUMBER OF CHANNELS FOR INTEGRATED COMMUNICATION, SURVEILLANCE AND CONTROL. THE TECHNICAL ASPECTS OF THESE ROADWAY SERVICES, AS WELL AS FACTORS RELATING TO INDUCTION-RADIO TRANSMISSION METHODS AS A MEANS OF RESTRICTING EFFECTIVE SIGNALING RANGE SUBSTANTIALLY WITHIN THE RIGHT-OF-WAY FOR VEHICULAR COMMUNICATIONS FUNCTIONS ARE DISCUSSED. FIELD STRENGTH AND OTHER MEASUREMENT DATA AS DERIVED FROM EXPERIMENTAL TESTS OF ROADSIDE-CABLE SYSTEMS AT VARIOUS CARRIER FREQUENCIES ARE INCORPORATED. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Supplemental Notes:
  • Vol Vt-19, PP 59-68
• Authors:
  • Halstead, W S
  • Mazzola, R A
• Publication Date: 1970-2

Media Info

• Serial:
  • IEEE Transactions on Vehicular Technology
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Coaxial cables; Communication systems; Communications; Control; Driver information systems; Radio; Surveillance; Transmission
• Old TRIS Terms: Radio transmission; Vehicular communications
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225868
• Record Type: Publication
• Source Agency: Traffic Systems Reviews & Abstracts
• Files: TRIS
• Created Date: Dec 2 1970 12:00AM