General

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...

Considerations for the Development of Alloys Suitable for Use in In-Line Hardening of Rails, Wheels, and Tank Car Plate having Lower Bainite Microstructures

In-line hardening of rails to produce a very fine pearlitic microstructure has become a commercial reality. A question that this report seeks to answer is whether or not it is possible to find an alloy composition that will permit the development of lower bainite microstructures by in-line...

Trespasser Bulletin No. 5: Calendar Year 1996

[From the Introduction] Trespassers represent the second largest category of deaths associated with the operation of railroads and are only slightly surpassed by deaths that occur at highway-rail crossings. In 1996, 45.3% of all reported deaths were to trespassers and 47% occurred at highway-rail...

Safety of High Speed Ground Transportation Systems: Technical Descriptions of Advanced Braking Concepts for High Speed Ground Transportation

The objective of this study is to develop qualitative and quantitative information on the various braking strategies used in high-speed ground transportation systems in support of the Federal Railroad Administration (FRA). The approach employed in this study is composed of two steps: first, build a...

Preliminary Assessment of Options for Increasing Participation of Historically Black Colleges and Universities in the Federal Railroad Administration Research and Development Program

[From the Background Section] The Federal Railroad Administration (FRA) in meeting its mission and complying with the provisions of Executive Order 12928 supported this study to review options for expanding the participation of Historically Black Colleges and Universities (HBCUs) in the FRA...

Passenger Rail Corridor Risk Assessment

[From the Introduction] This presentation discusses the applications of and methodologies for performing risk assessments for passenger rail corridors: introduction to risk assessment and risk assessment terminology, uses of a rail corridor risk assessment, role of the FRA and rail industry...

Investigation of Lateral Track Strength and Track Panel Shift Using AAR's Track Loading Vehicle

The Association of American Railroads (AAR) is conducting extensive lateral track strength (track panel shift) tests using the AAR’s Track Loading Vehicle (TLV). The entire test program consists of three phases: (1) demonstration tests, (2) fundamental tests, and (3) off-site tests and is a joint...

FAST Heavy Axle Load Ballast Test Results

A ballast experiment was performed at the Federal Railroad Administration’s Transportation Technology Center, Facility for Accelerated Service Testing (FAST), Pueblo, Colorado, as part of the original series of tests designed to determine track performance under 39-ton axle loads. Four ballast...

An Examination of the Costs and Business Benefits of Positive Train Control

The purpose of this study is to provide a preliminary estimate of the business benefits of Positive Train Control (PTC) - a system designed to prevent train collisions and provide a variety of business functions for railroads. An estimate of business benefits is one component of a comprehensive...

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General