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

Low-Cost Coupler Force Calculation from Impact Testing

Fractures in the stub sills of tank cars pose a significant problem for the rail industry due to the potential for damage to the tank structure and eventual release of the contents. Previous FRA research revealed that high magnitude coupling forces that occur in yard operations have the...

Locomotive Crash Energy Management: Train-to-Train Impact Test

This report describes the results of the program’s latest impact test, conducted in August 2022: the train-to-train impact test. In this test, a CEM-equipped locomotive leading two passenger cars impacted a stationary, conventional locomotive leading two freight cars. The primary objective of...