Technical Reports

Massachusetts Bay Transportation Authority Blue Line Vehicle Evaluation

The report presents the results of engineering tests carried out on a pair of rapid transit cars for the Massachusetts Bay Transportation Authority. The tests were performed at the Transportation Test Center, Pueblo, Colorado, from April 1979 through October 1979. The scope of the test program...

Laboratory Investigation of Track Gauge Widening Characteristics

This report describes test procedures and results of the AAR track gauge widening tests. The tests included static and dynamic lateral rail loadings under various vertical and longitudinal loads, relative effects of single and double axle gauge widening and single axle dynamic gauge widening under...

Laboratory Investigation of Lateral Track Shift

This report describes test procedures and results of the AAR lateral track shift tests. The tests included static and dynamic lateral track loadings under various vertical loads, relative effects of single and double axle loading, panel shift tests and single tie tests. These tests, which were...

Issues and Dimensions of Freight Car Size: A Compendium

An investigation is made into the effects of the size, weight, and length of freight cars on the safety and efficiency of U.S. rail transportation. A review is made of the historical and present population and usage of the U.S. freight car fleet. Distinct trends toward the purchase of larger,...

Freight Car Fatigue Test on FAST

As a result of observed cracks in the fabricated center sills of many freight cars in the FAST consist, a special Fatigue Analysis Test (FAT) was conducted on the FAST Track during August and September of 1978. This report provides an analysis of the static and dynamic strain data from a base case...

Evaluation of the Costs and Benefits of Advanced Braking and Coupling Systems

This report presents an evaluation of the costs and benefits of sixteen advanced railroad braking and coupling systems. Most of the benefits result from improved classification yard efficiencies, with secondary benefits accruing through reduced accident rates, road delays, and maintenance related...

Evaluation of Signal/Control System Equipment and Technology: Task 5 - Economic Studies

Economics form an important aspect in the comparison of new technologies with those which are subject to possible replacement. This report presents an economic analysis of candidate state-of-the-art signal/control systems which were selected in preceding tasks of the project. The report focuses on...

Dynamic Hopper Car Test

This report describes a test designed to establish the relationship between ride performance and track degradation, vehicle component wear, and the combined effect of rail degradation and component wear. The test was also designed to quantify the dynamic response of freight vehicles to different...

Draft Gear/Cushioning Unit Optimization for Train Action - Volume II: Final Report

This report describes a series of impact tests that were conducted by W. H. Miner, Inc., Research and Development Division, for the Draft Gear/Cushioning Unit Optimization Task of Track-Train Dynamics - Phase II. Using a special test fixture car, modified for these tests, buff and draft impact...

Design of Dead-Wire Instrumentation Package for Use on Electrified Railroad Test Track at Transportation Test Center

This report describes an instrumentation package designed to perform geometry measurements on a catenary system and to identify areas requiring adjustment, to perform maintenance checks on the catenary, to determine long-range stability and to provide performance data on a variety of pantograph/...

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Technical Reports