Technical Reports

CONCEPTUAL DESIGN AND ANALYSIS OF THE TRACKED MAGNETICALLY LEVITATED VEHICLE TECHNOLOGY PROGRAM (TMLV). REPULSION SCHEME

This report is an Executive Summary of FRA report OR&D-75-2l which summarizes studies to establish the technology of repulsion magnetic suspension for ultimate use in a passenger carrying high speed ground transportation (HSGT) system - at speeds on the order of l34m/s (300 mph). A baseline...

Aerodynamics of High Speed Ground Transportation Research and Development

The aerodynamic problems of high speed ground transportation systems have been examined for both conventional rail and other high speed systems. An aerodyhamic research and development program has been developed to provide the required information.

Advanced Component Testing: Kaskasia Handbrake Test.

The evaluation of a prototype remote operation handbrake showed that it can be installed on a car with only minor modifications to connect the air. This prototype did not set the emergency during any of the testing performed. The operation of the prototype worked as specified by the manufacturer.

LNG Safety Assessment Evaluation Methods

Sandia National Laboratories evaluated published safety assessment methods across a variety of industries including Liquefied Natural Gas (LNG), hydrogen, land and marine transportation, as well as the US Department of Defense (DOD). All the methods were evaluated for their potential applicability...

Engineering Design for Pedestrian Safety at Highway-Rail Grade Crossings.

A number of pedestrian treatments at railroad grade crossings have been developed and are used throughout the United States. The decision of when to use these treatments is generally a matter of best practices, using a decision tree, or conducting a site assessment. There has been little...

Wheel Rail Forces Measured Under Severe Track Geometry Alignment Variations

This report describes a series of vehicle track interaction tests conducted from October 1984 to December 1984, under the Federal Railroad Administration (FRA) Improved Track Safety Research Program, at the Department of Transportation, Transportation Test Center (TTC) at Pueblo, Colorado. The test...

Development of a Distance Based Criterion for Flange Climbing Derailment

A bi-parameter flange climbing distance criterion is developed for vehicles with AAR-IB wheels running on a new AREMA 136 RE rail. The two parameter that affect flange climbing distance are angle of attack and lateral to vertical force ratios.

Instrumented Wheelset Test: Material Handling Cars in Service from New York City to Chicago

Vehicle performance tests were conducted on empty 1400-series Amtrak Material Handling Cars (MHC) from Albany, New York, to Chicago, Illinois. TTCI used its 33-inch instrumented wheelsets, accelerometers, and data acquisition and analysis system to collect the vehicle performance data. In order to...

Study of Bridge Approach and Track Transition Degradation: Factors and Mitigation

Efforts have been made to reduce or eliminate track geometry degradation at bridge approaches and special trackwork zones for more than a century. This is a common problem that has been reported by railroads in North America, Europe, Asia, South America, and Australia. The objective of this report...

Review and Evaluation of Track Designs for Joint High Speed Rail and Heavy Freight Operations

An increasing number of railway track segments in the U. S. will soon be required to carry both high-speed passenger and heavy freight traffic. In some cases, conventional track structures (i.e., ballasted crosstie tracks) may not be adequate for both types of service. They may not be capable of...

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Technical Reports