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Examination of Vehicle Performance at High Speed and High Cant Deficiency

[+] Author Affiliations
Brian Marquis, Jon LeBlanc

U.S. DOT/Volpe National Transportation Systems Center, Cambridge, MA

Ali Tajaddini

U.S. DOT/Federal Rail Road Administration, Washington, DC

Paper No. JRC2011-56066, pp. 281-289; 9 pages
  • 2011 Joint Rail Conference
  • 2011 Joint Rail Conference
  • Pueblo, Colorado, USA, March 16–18, 2011
  • ISBN: 978-0-7918-5459-4 | eISBN: 978-0-7918-3893-8


In the US, increasing passenger speeds to improve trip time usually involves increasing speeds through curves. Increasing speeds through curves will increase the lateral force exerted on track during curving, thus requiring more intensive track maintenance to maintain safety. These issues and other performance requirements including ride quality and vehicle stability, can be addressed through careful truck design. Existing high-speed rail equipment, and in particular their bogies, are better suited to track conditions in Europe or Japan, in which premium tracks with little curvature are dedicated for high-speed service. The Federal Railroad Administration has been conducting parametric simulation studies that examine the performance of rail vehicles at high speeds (greater than 90 mph) and at high cant deficiency (greater than 5 inches). The purpose of these analyses is to evaluate the performance of representative vehicle designs subject to different combinations of track geometry variations, such as short warp and alinement.

Topics: Vehicles



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