Abstract:Railroad freight car safety and maintenance cost is directly related to knowledge of the actual braking force provided by a brake shoe. If the brake force is too low, safety is at risk. If the brake shoe is replaced before the end of it's lifetime to ensure safety, maintenance and thus operating… more
Abstract:Although the market clearly has several ride quality meters commercially available, the FRA wishes to investigate the possibility of designing a very compact and ultra portable ride quality meter (UPRQM) for allowing railroad inspectors to assess ride safety and quality on revenue trains as well as… more
Abstract:In 2006, the FRA introduced a Notice of Proposed Rulemaking (NPRM) to enhance intra-train communications on Tier I passenger cars. This rulemaking would promote the safety of passengers and crew members in passenger train emergencies by enhancing FRA's regulations for passenger train emergency… more
Abstract:The Ultra Portable Ride Quality Meter (UPRQM) is a cost-effective, flexible tool that can evolve (with minimal effort) as new GPS and accelerometer devices become commercially available. Each generation of these sensor devices is more responsive, more sensitive, and more accurate than the last… more
There are several categories such as “By Agency”, “By Year”, “By State” etc.
Select a checkbox within a category to refine your search results.
Each of your selections is listed in the “Narrow Search Filters” bar. You can uncheck these selections to remove them.
Search for Either Criteria
When you select multiple values within a category, the results will include values that match either of the selections.
For example, selecting “2005” and “2007” in the “By Year” category will display results that include either 2005 OR 2007 in the results.
Narrowing the Search Results
You can refine your search results across categories. To narrow down your results, select multiple values across different categories. The results will only include values that match the selections across the categories.
For example, selecting “2005” in the “By Year” category and “NASA” in the “By Agency” category will only display the results that contain both “2005” AND “NASA” in the results.