This paper provides an overview of the timed egress model for fixed guide way transit and passenger rail stations described in NFPA 130. First, the paper discusses the method for determining evacuations of station populations. It then discusses how the egress capacity for the station is determined. Finally, the method used to determine the time it takes to evacuate the station is discussed. The reader is referred to NFPA 130 2003. Appendix C., for specific guidance as to how to perform these calculations.