SYSTEM ANALYSIS METHODOLOGY IN URBAN TRAFFIC CONTROL SYSTEMS PHASE II

TRW INSTALLED AN ELECTRONIC SURVEILLANCE TEST BED IN HOUSTON, TEXAS, TO INVESTIGATE THE QUESTION OF TRAVEL TIME ESTIMATION ACCURACIES. DATA FROM A HEAVILY INSTRUMENTED THREE-INTERSECTION TEST BED IN DOWNTOWN HOUSTON WAS COMMUNICATED APPROXIMATELY 30 MILES VIA LEASED LINES TO TRW'S FACILITY FOR PROCESSING BY A SIGMA 5 COMPUTER. VALIDATION OF TRAVEL TIME DATA WAS OBTAINED USING A TELEVISION CAMERA MOUNTED ON THE ROOF OF AN ADJACENT BUILDING. A MODELING ANALYSIS WAS CONDUCTED OF CONGESTED ARTERIAL FLOW. THE ANALYSIS SHOWED HOW SIGNIFICANT DELAY REDUCTIONS CAN BE OBTAINED BY INCREASING THE CYCLE LENGTH TO PROVIDE THE REQUIRED GREEN TIME, AND BY CONTROLLING QUEUE LENGTH TO PREVENT MAIN STREET CONGESTION FROM BLOCKING CROSS STREET INTERSECTIONS. /NTIS/

• Supplemental Notes:
  • CONTRACT-FH-11-7489
• Corporate Authors:

  Trw Incorporated

  ,    
• Authors:
  • Barnfield, C L
  • Cooper, D L
  • Knox, R M
  • Serrell, M A
  • Siskind, J S
• Publication Date: 1971-6

Media Info

• Pagination: 183 p.

Subject/Index Terms

• TRT Terms: Central business districts; Computer programming; Data collection; Electronic equipment; Highway traffic; Information processing; Queuing theory; Surveillance; Systems analysis; Television cameras; Traffic control; Traffic signal hardware; Travel time; Urban areas
• Old TRIS Terms: Electronic means; Queueing theory; Vehicular traffic
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226673
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rept
• Files: TRIS
• Created Date: Aug 5 1973 12:00AM