Technical Reports

Collision Avoidance and Accident Survivability Volume 4: Proposed Specification

  • 01
  • Mar
  • 1993
AUTHOR: Federal Railroad Administration; Alan J. Bing
SUBJECT: Safety Advisories, Safety Regulatory Analysis, Safety Performance Measures
KEYWORDS: Safety, Crashworthiness, Human injury criteria, Magnetic levitation, Maglev, High speed rail, High speed guided ground transportation, structural anlaysis, structural testing
ABSTRACT: This is the 4th of 4 volumes concerned with developing safety guidelines and specifications for high speed guided ground transportation (HSGGT) collision avoidance and accident survivability. The overall approach taken in this study is to first formulate collision scenarios to which an HSGGT system may be exposed. Then existing U.S. and foreign rules, regulations, standards and practices concerned with either preventing the occurrence of a collision, or mitigating the consequences of a collision are reviewed, together with pertinent practices from other forms of transportation, leading to the formulation of guidelines and specifications for collision avoidance and accident survivability. This volume provides detailed specification for HSGGT system collision avoidance and accident survivability. The specification is structured in 3 levels. The first level specifies an overall system safety performance rquirement in terms of accident and casualty rates that must not be exceeded. The second level provides separate minimum requirements for collision avoidance and accident survivability in terms of severities of consequences or frequencies of occurrence that must not be exceeded. The third level provides minimum requirements for safety critical subsystems such as vehicle brakes and signal and train control systems. Supporting sections of the report describe the considerations leading to the development of the specification, and methods of performing risk analyses called for in the specification.
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