The Volpe Center is supporting the Federal Railroad Administration’s full-scale testingprogram to understand and improve rail
vehicle crashworthiness. The objective of one of the sets of tests in this programis determining thebehavior of cab car end
structures in simulated grade crossing collisions. The project described in this report supported these tests bydeveloping ready-to-
fabricate designs for the endsof passenger cars to represent a State-of-the-Art (SOA) and a 1990s cab cardesign, bothof which
are primarily strength-based designs. Thereport includes a description ofprior research on cab car crashworthiness, the
requirements for the designs, the designs themselves and the analyses used to demonstrate that the designs meet the requirements.
Also included is a comparison between strains measuredfrom quasi-static load tests and from finite element analyses. The results
of the project show that the SOA endframe provides substantially greater strength and energy absorption capability than the 1990s
designwith little penalty in weight.