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Technical Reports

Fouled Ballast Waiver Operations and Results

Current regulations require locations of noncompliant ballast to be remediated within 30 days or to be taken out of service, regardless of track class. In 2013, the Association of American Railroads (AAR) applied for a waiver to the current regulations that proposed a track class specific...

Rail Safety Training Course for Law Enforcement

Proper law enforcement can deter risky behavior and it is vital that law enforcement officers receive proper training pertaining to the importance of enforcing trespassing and grade crossing laws. Law enforcement officers are typically the first emergency responders to reach the scene of an...

Wheel Failure Investigation Program: Phase 2

Although rare, broken wheel derailments tend to be more catastrophic than other derailment types as a sudden fracture can occur in service at revenue train speeds. It is very difficult to detect the hidden defects which cause such events, prior to failure. In February 2016, the Federal Railroad...

Side Impact Test of a DOT-113 Surrogate Tank Car with Water

The Federal Railroad Administration (FRA) conducted a side impact test of a surrogate DOT-113 tank car at Transportation Technology Center, Inc. (TTCI) to evaluate its performance under dynamic impact conditions and to provide data for the verification and refinement of a computational model....

Test Evaluation of Retrofit Collison Post Design for Legacy Locomotives

Legacy locomotives, such as narrow-nose designs manufactured before 1990, were not required to comply with crashworthiness requirements. Therefore, these locomotives afford less crew protection in case of train collisions. In this  project, collision posts that offer additional crash...

Raking Impact Testing of Diesel Multiple Unit (DMU) Fuel Tanks

On December 18, 2018, a quasi-static raking test of a diesel multiple unit (DMU) fuel tank was conducted at the Transportation Technology Center (TTC) in Pueblo, CO. This test resulted in puncture of the tank's end sheet and a 22.6-inch tear in its bottom sheet. On November 13, 2019, a second...

Railroad Information Sharing Environment (RISE)

Despite tremendous progress in railroad safety over the last 30 years, many safety statistics have plateaued. Thus, additional insights on the complex interaction between people, trains, infrastructure, and the operating environment are needed. While the Federal Railroad Administration (FRA)...