Technical Reports

Safety of High Speed Magnetic Levitation Transportation Systems: Comparison of U.S. and Foreign Safety Requirements for Application to U.S. Maglev Systems

This report presents the results of a systematic review of the safety requirements selected for the German Transrapid electromagnetic (EMS) type maglev system to determine their applicability and completeness with respect to the construction and operation of maglev systems in the United States....

Study to Establish Ride Comfort Criteria for High Speed Magnetically Levitated Transportation Systems

The ride motions of a Maglev system were simulated by performing specific vertical and roll maneuvers in a small executive jet aircraft. After each maneuver the passenger subjects recorded a comfort rating on a 7-point scale from very comfortable to very uncomfortable. The vertical accelerations of...

Verification Methodology for Fault-Tolerant, Fail-Safe Computers Applied to Maglev Control Computer System

The Maglev control computer system should be designed to verifiably possess high reliability and safety as well as high availability to make Maglev a dependable and attractive transportation alternative to the public. A Maglev computer system has been designed using a design-for-validation...

Evaluation of Wheel/Rail Contact Mechanics: Concepts Report

A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail contact dynamics and mechanics, especially as it pertains to high-speed rail. Both scaled and full-scale designs are being...

The Aerodynamic Effects of High-Speed Trains on People and Property at Stations in the Northeast Corridor

This report presents the results of a study to evaluate the aerodynamic (air velocity and pressure) effects of the new high-speed trains on the safety and comfort of people and the impacts on physical facilities in and around Northeast Corridor stations. This report focuses particularly on the...

Train-to-Train Rear End Impact Tests Volume II: Impact Test Summaries

This final report documents these nine tests. Volume I, Pre-Impact Determination of Vehicle Properties, summarizes the vehicle properties obtained prior to the impact tests. These vehicle properties were used in computer simulation of the impact tests and included weights, pitch moments of inertia...

Selected Topics in Railroad Tank Car Safety Research Volume I: Fatigue Evaluation of Prototype Tank Car Head Shield

The characteristics of a prototype head shield for hazardous material tank cars were evaluated with respect to the maintenance of its structural integrity under normal service conditions. The primary concern was with the resistance to fatigue damage of head shield connections to the tank car. The...

Safety of High Speed Ground Transportation Systems: Work Breakdown Structure

This report provides a systems approach to the assessment of high-speed guided ground transportation (HSGGT) safety needs and presents one potential methodology by combining a work breakdown structure (WBS) with an interface evaluation methodology. Through a total system approach, this report ties...

Safety of High Speed Guided Ground Transportation Systems: The Biological Effects of Maglev Magnetic Field Exposures

This report describes selected biological effects on transformed human cell lines and on rats from exposure to simulated maglev magnetic fields (MFs). Rats (n = 6 per group) were exposed at various times throughout the 24-h day to MFs simulating the de and complex ac components of the German...

Safety of High Speed Guided Ground Transportation Systems: EMF Exposure Environments Summary Reports

This paper presents an overview of American exposure assessments for electric and magnetic fields (EMF) in the frequency range from 0 to 3 kHz. The exposure information available is very limited for all but a few occupations and sources of EMF. Much of the exposure assessment done to date has been...

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Technical Reports