AN INVESTIGATION OF INTERSECTION TRAFFIC CONTROL: THE EXPERIENCE WITH SLOW-SCAN TELEVISION

IN ORDER TO INVESTIGATE AND TEST METHODS OF COORDINATING ADJACENT INTERSECTION TRAFFIC SIGNALS WITH EXPRESSWAY ENTRANCE RAMP METERING INSTALLATIONS, ONE COMPLEX EXPRESSWAY-ARTERIAL STREET INTERCHANGE WAS INSTRUMENTED WITH A SLOW-SCAN TELEVISION (SSTV) SURVEILLANCE SYSTEM. THE SSTV CONCEPT FEATURED TRANSMISSION OF FIELD PICTURES AT REGULAR SHORT INTERVALS OVER LEASED LOW-COST TELEPHONE LINES TO A REMOTE OFFICE. PROBLEMS WITH THE SSTV SYSTEM AND UNEXPECTED INCREASES IN THE LEASED PHONE LINE COSTS RESULTED IN A COSTLY UNWORKABLE HARDWARE SYSTEM, WHICH PREVENTED COMPLETION OF THE PLANNED TRAFFIC STUDY. THE REPORT DOCUMENTS THE RESEARCH RESULTS AND THE EXPERIENCE WITH SLOW-SCAN TELEVISION, AND COVERS THE PRESENT CONTROVERSY OVER THE USE AND CONTROL OF TELEVISION EQUIPMENT ON LEASED PHONE LINES. /FHWA/

• Supplemental Notes:
  • Contract No IHR-88
• Corporate Authors:

  Illinois Department of Transportation

  2300 S. Dirksen Parkway
  Springfield, IL  United States  62764

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • McDermott, J M
• Publication Date: 1972

Media Info

• Pagination: 63 p.

Subject/Index Terms

• TRT Terms: Interchanges; Leasing; Ramp metering; Signalized intersections; Television cameras; Traffic signal control systems; Traffic surveillance; Transmission lines
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225034
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Interim Report
• Files: TRIS, USDOT
• Created Date: Sep 17 2002 12:00AM