The Federal Railroad Administration (FRA) was created by the Department ofTransportation Act of 1966. It is one of ten agencies within the U.S. Department ofTransportation concerned with intermodal transportation. FRA promotes safe,environmentally sound, successful railroad transportation to meet the needs of all customers today and tomorrow.
FRA's Office of Railroad Safety promotes and regulates safety throughout the Nation's railroad industry. The office executes its regulatory and inspection responsibilities through a diverse staff of railroad safety experts.
The Federal Railroad Administration is responsible for working with stakeholders to develop cohesive goals and policies for maintaining and improving the U.S. freight and passenger rail networks. This section covers various efforts across America and the world in helping to deliver safe, reliable, and efficient rail transportation.
FRA Research & Development (R&D) projects contribute to the FRA's safety regulatory processes, to railroad suppliers, to railroads involved in the transportation of freight, intercity passengers, commuters, and to railroad employees and their labor organizations.
In this section, we provide descriptions and comprehensive, official sources for FRA's regulations (also called rules), selected legislation, as well as policy and guidance documents. Additionally, you will find current topics of high interest or significant impact to Congress, railroads, employees, labor, public interest groups and other stakeholders.
FRA supports passenger and freight railroading through a variety of competitive grant, dedicated grant, and loan programs to develop safety improvements, relieve congestion, and encourage the expansion and upgrade of passenger and freight rail infrastructure and services. FRA also provides training and technical assistance to grantees and stakeholders.
Passenger Cab Car Grade Crossing Impact Test Report
AUTHOR: Tyrell, David; Martinez, Eloy; Jacobsen, Karina; Perlman, Benjamin OFFICE: RPD REPORT NUMBER: DOT/FRA/ORD-07/24 KEYWORDS: Transportation, safety, crashworthiness, passenger rail vehicles, cab car end structure, grade ABSTRACT: Two full-scale oblique grade crossing impact tests were conducted in June 2002 to compare the crashworthiness performance of
alternative corner post designs on rail passenger cab cars. On June 4, 2002, a cab car fitted with an end frame built to pre-1999
requirements impacted a steel coil at approximately 14 mph (22.5 km/h). Following on June 7, 2002, a cab car fitted with an end
frame built to current requirements also impacted a steel coil at approximately 14 mph (22.5 km/h).
The tests were conducted in response to a recommendation from the American Public Transportation Association’s Passenger
Rail Equipment Safety Standards Committee to measure the crashworthiness performance of alternative cab car end frame
designs. During the test of the 1990s design, the corner post failed, eliminating the survival space for the operator. During the test
of the state-of-the-art (SOA) design cab car, the corner post remained attached and deformed less than 9 in (228 mm), preserving
space for the operator.
The crush of the cars was analyzed using detailed finite element models. The impact end of each car was modeled, including
approximately one quarter of the length of the car. The back end of the cab car model was fixed, and its end structure was
impacted by an initially moving cylinder with the same mass and dimensions as the steel coil used in the tests.
The results from the full-scale grade crossing impact tests validated the preliminary results of the three-dimensional lumped