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 RSS

Analytic Studies of the Effects of Track Geometry Variation

In this report, analyses are described which were used to aid in the planning of tests carried out on track in Bennington, New Hampshire in August 1982. These tests were designed to provide insight into practical aspects of track safety standards. General results for a fully loaded 100-ton hopper...

Analytical Descriptions of Track Geometry Variations

Analyses of recorded track geometry measurements were conducted to develop analytical representations of track geometry variations that exist on the U.S. railroad track. These analytical representations include: !) continuous stationary random variations described by power spectral density...

Analytical Descriptions of Track Geometry Variations

Analyses of recorded track geometry measurements were conducted to develop analytical representations of track geometry variations that exist on the U.S. railroad track. These analytical representations include: 1) continuous stationary random variations described by power spectral density...

Grease Evaluations using the Hi-Rail Lubrication System at FAST

Previous testing of lubrication systems at the Facility for Accelerated Service Testing (FAST) have stimulated a general interest in grease performance. The hi-rail grease test was conducted to evaluate four types of lubricant when used with a hi-rail track lubricator. In this test, the grease...

Overview - FAST Lubrication Study

From October 1983 to November 1984, a lubrication study funded -by the Federal Railroad Administration was conducted by the Association of American Railroads at the Facility for Accelerated Service Testing (FAST) at the Transportation Test Center in Pueblo, Colorado. The FAST Lubrication Study...

Track Geometry Measurement System

This report describes the Track Geometry Measurement System (TGMS) developed fro the Department of Transportation under contract no. DOT-TSC-1367. This report also contains a summary of the results of the test program that was conducted to validate the TGMS under various static and dynamic...

Research Results Digest 79

This digest summarizes the results of TCRP Project D-7/Task 15. The digest was prepared by the Transportation Technology Center, Inc. (TTCI) in Pueblo, Colorado.

Investigation of Rail Bolt Hole Cracks

This document is a collection of two reports on the rail bolt hold crack. part I describes the development of a model based on beam-on-elastic foundation analysis to calculate the shear force acting at a given bolt hold location. The model includes the effects of wheel and joint bar forces, joint...