USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

General

Analysis of Tread Buildup on Railroad Wheels

The Federal Railroad Administration (FRA) Office of Research, Development, and Technology and the Association of American Railroads (AAR) fund research conducted by Transportation Technology Center, Inc. (TTCI) on the root cause of wheel-related accidents. The purpose of this project was to...

Tensile Test Results of Samples Taken from Critical Areas of Bolsters

The Federal Railroad Administration (FRA) collaborated with the Association of American Railroads’ (AAR) Coupling System and Truck Castings Committee and Transportation Technology Center, Inc. (TTCI) to investigate possible solutions to railcar side frame and bolster failures.. 

Summary of Charpy and Dynamic Tear Testing of Bolster Samples

The Federal Railroad Administration (FRA) collaborates with the Association of American Railroads’ (AAR) Coupling System and Truck Castings Committee and Transportation Technology Center, Inc. to investigate possible solutions to early-life failures of railcar side frames and bolsters. ...

Locomotive Crash Energy Management Train-to-Train Collision Test

The Federal Railroad Administration (FRA) sponsored MxV Rail to conduct a collision test using both a moving and a stationary three-car consist. The moving consist included an EMD F40 passenger locomotive equipped with crash energy management (CEM) components backed by two M1-series passenger...

Movement Approvals

FRA has the authority to issue one-time movement approvals (OTMAs) for bulk packages that no longer conform to the hazardous materials regulations contained in 49 CFR § 174.50. OTMAs are required for movement of nonconforming tank cars or any other bulk nonconforming packages designed, marked, or otherwise represented for the transportation of hazardous material. 

Please see HMG-127 (issued October 17, 2024) for the guidelines to follow when applying for an OTMA.