DEVELOPMENT OF A TECHNIQUE FOR DIGITAL COMPUTER CONTROL OF A SAFETY WARNING SYSTEM FOR URBAN FREEWAYS

A CONTROL TECHNIQUE FOR DIGITAL COMPUTER CONTROL OF A SAFETY WARNING SYSTEM FOR URBAN FREEWAYS WAS DEVELOPED AND EVALUATED. TRAFFIC ENERGY WAS USED AS THE CONTROL VARIABLE. COMPUTER LOGIC WAS DEVELOPED CENTERED ABOUT CRITICAL ENERGY AS THE CONTROL PARAMETER. THE ABILITY OF THE CRITICAL ENERGY PARAMETER TO DETECT STOPPAGE WAVES WAS STUDIED AND EVALUATIONS WERE MADE OF THE PERFORMANCE, RELIABILITY, STABILITY, AND SENSITIVITY OF THE CONTROL LOGIC. BASED ON THE RESULTS OF THIS RESEARCH, REVISED CONTROL PROGRAM WAS STRUCTURED AND LATER IMPLEMENTED TO AUTOMATICALLY CONTROL THREE PROTOTYPE SAFETY WARNING SYSTEMS ON THE GULF FREEWAY. /THD/

• Supplemental Notes:
  • RES REP NO: 165-5
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Dudek, C L
• Publication Date: 0

Media Info

• Features: Figures; References; Tables;
• Pagination: 89 p.

Subject/Index Terms

• TRT Terms: Behavior; Control devices; Drivers; Freeways; Information processing; Safety; Shock waves; Traffic flow; Traffic signal control systems; Traffic surveillance; Warning systems
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00224307
• Record Type: Publication
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 17 1973 12:00AM