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This report analyzes the problem of inductive interference with audio-frequency signaling caused by chopper-controlled propulsion systems on rapid transit vehicles. After discussing audio-frequency track circuits, the report examines chopper interference generation as well as methods for observing...
The cost of electricity is a significant portion of the operating costs of rail transit systems. The impact of increasing energy costs is felt by those systems presently in operation and will be felt by those in the planning or construction phases. Because of the number of nuclear power plants...
The cost of electricity is a significant portion of the operating costs of rail transit systems. The impact of increasing energy costs is felt by those systems presently in operation and will be felt by those in the planning or construction phases. Because of the number of nuclear power plants...
The cost of electricity is a significant portion of the operating costs of rail transit systems. The impact of increasing energy costs is felt by those systems presently in operation and will be felt by those in the planning or construction phases. Because of the number of nuclear power plants...
[From the Introduction] Railroads are required to file monthly accident/incident reports with the Federal Railroad Administration's (FRA) Office of Safety in accordance with 49 CFR 225. Bulletin 154 summarizes reportable accidents/incidents that, occurred in the United States during 1985 .
The 1983 Summary of Accidents Investigated by the Federal Railroad Administration (FRA) includes 113 railroad accidents.
This summary provides the following information: the railroad(s) involved, the location and the time of the accident, the type of railroad accident, the method of operation and...
This report describes the design, manufacture and testing of a propulsion system for passenger rail application utilizing a variable-voltage, variable-frequency (VWF) inverter and a squirrel cage induction motor, along with associated microprocessor control circuitry. Novel developments in this...
Laboratory track strength characterization tests on three different track structures were conducted. The objectives of these tests were to determine the structural characteristics of each track structure, under various loadings and levels of consolidation, and to compare the findings with the...