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Demonstration of High Speed Track Maintenance Using Objective Gage Strength Data

This report presents the results of the FRA sponsored project “Demonstration of High Speed Track Maintenance Using Objective Gage Strength Data”. This activity, which is part of the FRA’s Next Generation High Speed Rail Program, is aimed at the development of “maintenance” criteria for track...

Automated Measurements of Lateral Track Panel Strength and Examinations of Track Maintenance Effects Using AAR's Track Loading Vehicle

This report summarizes test results and findings under the project "TLV Track Panel Shift and Lateral Track Strength Tests." The project was jointly funded by AAR and FRA. These tests were performed primarily off-site on Norfolk Southern revenue tracks, but a significant portion of tests was...

Train Dispatcher Training: Preparing for the 21st Century

This document is a transcription of a one-day workshop on training objectives and techniques to meet the challenges of 21st century train dispatching. The workshop was held on October 1, 1998 in Chicago, IL.

Results of Laboratory Quasi-Static Jacking Tests on Three Vehicles

Laboratory quasi-static jacking tests were performed on three vehicles at the Transportation Technology Center, Pueblo, Colorado. Results indicate vehicle wheel unloading that occurred during the tests varied with cross level difference, car body torsional stiffness, truck spacing, and vehicle...

Railroad Train Dispatcher Workload, Stress, and Fatigue - Phase II Report: Pilot Field Test

[From the Introduction] The purpose of this project is to identify the sources of workload, stress, and fatigue associated with the train dispatcher’s job and working life. In order to accomplish this task, the following issues will be examined: The characteristics and requirements of the task;...

Distributions of Dynamic Wheel/Rails Under Heavy Axle Loads

Under the Heavy Axle Load (HAL) program funded by the Association of American Railroads (AAR) and the Federal Railroad Administration (FRA), a test activity was initiated in 1997 to study the relationships between dynamic vehicle responses and track geometry conditions. As a first step, analyses...

Improved Roller Bearing Wayside Detection Research - Phase I Laboratory Test Report

A series of tests were performed at the Bearing Test Facility at the Transportation Technology Center in Pueblo, Colorado, to gather acoustic and acceleration emissions for a number of roller bearing defect types designated by the rail industry as a priority. This database will be used to develop...

High-Speed Ground Transportation Noise and Vibration Impact Assessment

This manual provides procedures for the assessment of potential noise and vibration impacts resulting from proposed high-speed ground transportation (HSGT) projects, including high-speed rail using traditional steel-wheel on steel-rail technology and magnetically levitated (maglev) systems. This...

Effect of Track Twist on Vehicle Dynamic Performance: Final Report

Results of tests conducted at the Transportation Technology Center (TTC), Pueblo, Colorado, indicate that vehicle response to track twist varies significantly with car type. Critical response variables include car body torsional stiffness, truck spacing, track alignment (tangent or curve), track...

Conventional Passenger Rail Vehicle Safety, Volume I: Summary of Safe Performance Limits

This report presents a methodology based on computer simulation that assesses the safe dynamic performance limits of commuter passenger vehicles. The methodology consists of determining the critical design parameters and characteristic properties of both the vehicle and the track, establishing the...

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General