SAFETY ANALYSIS FOR AUTOMATED TRANSPORTATION SYSTEMS

FOR VEHICULAR GROUND TRANSPORTATION SYSTEMS OPERATED UNDER COMPUTER SURVEILLANCE AND CONTROL, A QUANTITATIVE INDEX OF SAFETY IS FORMULATED AND A PROCEDURE IS DEVEOLOPED FOR ANALYZING THE DEPENDENCE OF SYSTEM SAFETY ON THE SIGNIFICANT DESIGN PARAMETERS AND PERFORMANCE ATTRIBUTES. LOWER BOUNDS ON THE PERMISSIBLE MINIMUM HEADWAY ARE ESTABLISHED ON THE ASSUMPTION OF INSTANTANEOUS AND PERFECT CONTROL, SO THAT THE EFFECTS OF VARIOUS SENSING, COMMUNICATION, CONTROL AND ACTUATION SUBSYSTEMS CAN BE ASSESSED INDEPENDENTLY. TIME DELAYS IN EMERGENCY CONTROL -- RESULTING FROM DISCRETE SENSOR SPACING, FINITE SAMPLING TIME, AND LOSS OF TELEMETERED DATA -- ARE ANALYZED AND EXPRESSIONS FOR THE ATTENDANT INCREASE IN THE MINIMUM HEADWAY ARE DEVELOPED. THE GENERAL APPROACH AND THE SPECIFIC TECHNIQUES ARE ILLUSTRATED WITH NUMERICAL EXAMPLES. /AUTHOR/

  • Availability:
  • Authors:
    • Rahimi, A
    • Hajdu, L P
    • Macomber, H L
  • Publication Date: 1973-2

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00222214
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 17 1973 12:00AM