General
Introduction of HAL Traffic (286 Cars) on Revenue Service Lines: A Preliminary Analysis
Preliminary results of the Association of American Railroad's (AAR) Heavy Axle Load (HAL) Revenue Service Monitoring Program suggest that the effects of HAL traffic on revenue service lines are very similar to those experienced on the High Tonnage Loop (HTL) at the Transportation Technology Center...Phase II: Track Train Dynamics
The major objective of Phase II of Track/Train Dynamics was to perform research which would lead toward the development of performance specifications. This report reviews some of this research to promote a better understanding of how the various elements were to be incorporated into performance...HAL Substructure Investigation Using Rapid, Non-Destructive Techniques
As part of a program to determine the nature of track substructure problems and to recommend the best remedial action, the Association of American Railroads has developed an on-track vehicle which houses a rapid, non-destructive subgrade test apparatus known as a cone penetrometer. Although still...FAST Heavy Axle Load Program Safety Compendium
[From the Introduction] The Federal Railroad Administration (FRA) and the Association of American Railroads (AAR) have jointly funded research activity at the Facility for Accelerated Service Testing (FAST) to study the effects of increasing the nominal North American railroad axle load from 33-...Technical Documentation: 2, 3, & 4 Axle Rigid Truck Curve Negotiation Model
[From the Introduction] An understanding of curve negotiation mechanics is vital from the standpoint of learning of the design and operating parameters that result in decreases and increases in the lateral reaction occurring between the wheel flange and rail, for it is this lateral load that...Vision for High-Speed Rail in America
In order to meet the goals of the Recovery Act while initiating a transformational new program, we propose to advance three funding “tracks”: Projects. Provide grants to complete individual projects that are “ready to go” with preliminary engineering and environmental work completed; Corridor...