Recent advances in passenger rail transportation, fire test methods, and hazard analysis necessitate reexamination of requirements for fire safety. Several studies have indicated nearly random ability of current bench-scale tests to predict actual fire behavior. Fire safety in any application, including transportation, requires a multi-faceted approach. The effects of vehicle design, material selection, detection and suppression systems, and emergency egress and their interaction, on the overall fire safety of the passenger trains must all be considered. The strengths and weaknesses of current methods for measuring the fire performance of rail transportation systems are evaluated. A systems approach to fire safety which addresses typical passenger train fire scenarios is analyzed. A rationale is presented for the direction in which most fire science-oriented organizations in the world are clearly headed -the use of fire hazard and fire risk assessment methods supported by measurement methods based on heat release rate.