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

Subscribe to General

Chopper Propulsion System for Electric Locomotives

This preliminary report summarizes the work done during Phase I of contract DOT-FR-9027. This program covers the design and retrofit of a Conrail E44 electric locomotive with a chopper drive system. The chopper system was previously developed by the General Electric Company at its Erie facility and...

Brake System Design Optimization- Volume I: A Survey and Assessment

Existing freight car braking systems, components, and subsystems are characterized both physically and functionally, and life-cycle costs are examined. Potential improvements to existing systems previously proposed or available are identified and described in functional and economic terms....

Anti-Derailment Sensor System Phase I Feasibility Study

In the context of items of hardware which have been developed for military use, principal causes of derailments were studied to determine those amenable to anticipation detection or by onboard sensors. Other elements for relaying sensor outputs and taking appropriate action to prevent or...

Anti-Derailment Sensor System

In the context of items of hardware which have been developed for military use, principal causes of derailments were studied to determine those amenable to anticipation detection or by onboard sensors. Other elements for relaying sensor outputs and taking appropriate action to prevent or...

An Evaluation of the Dynamics of a Magnetically Levitated Vehicle

An analytical and experimental evaluation was made of the stability and dynamic characteristics of a small scale magnetically levitated vehicle. The vehicle was levitated over a variety of guideway perturbations in an attempt at stimulating unstable modes of oscillation, No instabilities...

A Survey of Railroad AC Electrification Systems Throughout the World

This report describes the major features of various railroad electrification schemes for supplying the catenary from the source of power for ac operation. These features include: details of the power source, high-voltage substation connections, substation details, catenary-to-substation connections...

A Survey of Alcohol and Drug Abuse Programs in the Railroad Industry

A survey of 20 industrial alcoholism and counseling programs run by railroad corporations covering 58 variables was made by semi-structured interviews of program directors, union officials, and by questionnaires applied to individual clients. Descriptions of program policy, practices, penetration...