eLibrary

Initial Assessment of the Technical Feasibility and Potential Cost Savings of a Lower-cost Positive Train Control Activated Crossing

The overall objective of this project was to improve safety at the HRIs. The approach used to achieve the objective was to (1) increase the proliferation of constant warning time HRIs by reducing the cost of radio-based HRI technology and (2) increase the reliability of radio-based HRIs by reducing...

Full-Scale Single Car Multilevel Car Test- Test No. 9 Procedures, Instrumentation, & Data

This report addresses the efforts to document the behavior of an existing design multilevel passenger car as it impacts a stationary wall at approximately 36 mph. Transportation Technology Center, Inc.'s (TTCI) role was to instrument the vehicle per FRA direction, conduct the testing, report on the...

Friction and Creep in Rolling Contact

Experimental and analytical studies of friction and creep in rolling contact are reported. Factors examined for their influence on friction (adhesion) and creep are (a) surface roughness, (b) surface vibration, (c) surface contamination, (d) dynamic loading due to irregular track, and (e)...

FRA Two Car Impact Test

Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads, performed a full-scale impact test at the Federal Railroad Administration's Transportation Technology Center near Pueblo, Colorado. The April4, 2000 test was performed using two Budd Company Pioneer-type...

Tank Car Nondestructive Evaluation

An evaluation of nondestructive testing (NDT) methods, authorized for use in replacing the current hydrostatic pressure test for qualification or re-qualification of railroad tank cars, has been performed by the Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of...

Fatigue Tests on Trail Hitch at FAST- The FAT II Report

Cracks appeared in a hitch and its underdeck support on one of the three Trailer-onFlat Cars (TOFC) in the FAST (Facility for Accelerated Service Testing)train consist 3,000 miles after inspection (at 186,000 miles). As a result, a series of static and dynamic (FAST operation} tests was undertaken...

Extreme Conditions Impact on rapid Transit Systems: Effect on Automatic Train Control

Automatic Train Control (ATC) has gained wide acceptance and is presently used in all aspects of rapid rail operations. Because ATC has a limited range of detection, conditions outside those limits might present hazards to transit system operation. With a trend toward less human involvement in the...

Exploratory Soil Borings at Two Locations for the U.S. Department of Transportation

Exploratory borings and soil classification studies are reported on for two locations; southeast Kansas and northeast New Mexico. The object of the work was the revelation of sufficient sub-soil information to enable a decision on the part of the sponsoring agency as to where to most...

Evaluation of Squeal Noise from the WMATA Transit Car Disc Brake System: A Preliminary Investigation

This study was conducted as part of the Urban Rail Noise Abatement Program sponsored by the Office of Rail and Construction Technology of the Urban Mass Transportation Administration. The Washington Metropolitan Area Transit Authority (WMATA) rail transit car design adopted the use of disc brakes...

Evaluation and Service Testing of Prototype Empty/Load Brake Device to Reduce Wheel Spalling Due to Slide

The Transportation Technology Center, Inc. and New York Air Brake evaluated a prototype three-step graduated empty and load (E/L) brake device to reduce wheel spalling due to wheel slide on intermodal double-stack railcars. Analysis of the results showed an increase in the rate of wheel spalling on...

« First
‹‹
…
618
619
620
621
622
623
624
625
626
…
››
Last »

USA Banner

eLibrary