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.

Portions of the Department of Transportation are currently in shutdown/furlough status due to a lapse in appropriations. Please continue to monitor this page for updates on DOT’s operating status.

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

Technical Reports

Relationship of Inspection Methods to Ballast Degradation Models: Phase I

This report compiles the first phase of a Federal Railroad Administration (FRA)-sponsored project to evaluate lateral ballast behavior and how mechanics-based track geometry deterioration models forecast field behavior. The lateral ballast behavior section analyzed historical and recent single...

NDE Methods for Corrosion Monitoring in Railroad Tank Cars

This report discusses the use of various nondestructive evaluation (NDE) methods for detecting and characterizing corrosion defects in tank cars. Several tank car panels with a real corrosion defect as well as simulated corrosion defects were fabricated from the actual tank car. Advanced NDE...

Development of Symbology for a Locomotive Head-Up Display (HUD)

As part of a Federal Railroad Administration (FRA)-funded Head-Up Display (HUD) research project that began in 2020, KEA Technologies Inc. developed a limited library of symbols for both freight and passenger operations, to be integrated in a prototype HUD developed separately by another team of...

Stakeholder Perceptions of Longer Trains

This report documents stakeholder perceptions emerging from focus groups about very long trains (VLTs) with participants from three labor unions, the Federal Railroad Administration (FRA), and two freight railroads. All stakeholders expressed uncertainty about how to define a VLT and noted that...

Side Structure Integrity Research for Passenger Rail Equipment

FRA sponsored research to evaluate the side impact strength of Tier I passenger rail equipment designs built to the current rollover and side structure regulations. This report presents results from the first stage of this research program, including: (1) the makeup of the U.S. passenger car...

Technologies and Testing to Prevent Water Ingress in Railroad Bearings

Bearing degradation and defects can result in a bearing being removed from service before the end of its normal service life or possible bearing failure, causing service disruption or even derailment. Water damage is the leading cause of premature bearing failure; therefore, preventing this...

Comparison of International Fire Safety Standards with U.S. Requirements

The Volpe National Transportation Systems Center compared and contrasted U.S. fire safety regulations and standards on rolling stock with the European Union, Japan, and China. The major areas of study were fire safety analysis, materials performance standards, toxicity performance standards,...

Improved Railroad Freight Car Truck Performance and Safety: Phase 1

The Federal Railroad Administration contracted Transportation Technology Center, Inc. (TTCI) to explore the development and status of the Improved (or Integrated) Freight Car Truck (IFCT) and trace the development of the modern three-piece truck into the M-976 truck into the IFCT over the last...