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Analyses of Track Shift Under High-Speed Vehicle-Track Interaction

This report describes analysis tools to predict shift under high-speed vehicle-track interaction. The analysis approach is based on two fundamental models developed (as part of this research); the first model computes the track lateral residual deflections under vehicle passage, whereas the second...

Simulation Model for Risk/Benefit Evaluation of Rail Inspection Programs

A Monte Carlo simulation of certain aspects of rail inspection is presented. The simulation is used to compare alternative practices in railroad rail inspection programs. The results how that equipment performance and/or inspection frequency control service defect rate and suggest that allowance of...

Commuter Rail Seat Testing and Analysis

The need to determine the structural integrity and passenger safety provided by existing commuter rail seats was identified by the Construction/Structural Subgroup of the American Public Transportation Association's (APTA) Passenger Rail Equipment Safety Standards (PRESS) Task Force. Recognizing...

Automated Rail Based Wheel Gauge- Phase I Report

IEM personnel conducted face to face interviews with senior officials with three major transits and four Class I railroads. We also conducted extensive phone and mail surveys soliciting the opinion of representatives of all the Class I railroads, all major private car owners and all the leading...

Northern Indiana/Northwestern Ohio Routing Study

Intercity passenger rail service through Northern Indiana and Ohio plays an important role in the Midwest Regional Rail Initiative (MWRRI). The MWRRI is an on-going effort involving nin Midewest states, Amtrak, an dthe Federal Railraod Administration to investigate and develop an improved and...

Ride Quality Evaluation of High Speed Trains on the Northeast Corridor

A portable system to allow collection and analysis of carbody vibration data according to ISO standard 2631 was designed and built. This system allowed the FRA to record and compare the ride quality performance of foreign and domestic high speed trains operating in revenue service on the Northeast...