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Flange Climb Derailment Criteria and Wheel/Rail Profile Management and Maintenance Guidelines for Transit Operations (2005) / Chapter Skim
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Pages 1-2

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From page 1...
... These profiles were applied to simulations of both light rail and rapid transit vehicles with flange angles ranging from 60 degrees to 75 degrees and flange length ranging from 0.395 to 0.754 in. The proposed criteria were validated using flange-climb test data collected with the research team Track Loading Vehicle (TLV)
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From page 2...
... and maintenance of wheel/rail profiles for transit operations involving the following areas have been provided: • New wheel profile drawings • Wheel/rail profile measurement and documentation • Wheel/rail profile assessment • Wheel re-profiling • Wheel profile design • Ground rail profile design • Effect of gage and flange clearance on wheel/rail interaction • Wheel/rail profile monitoring program 2
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Key Terms

  • transit operations
  • climb derailment
  • derailment criteria
  • profile management
  • flange length

  • representative transit
  • wheel profile
  • maintenance guidelines
  • currently applied
  • team track

  • computer simulations
  • criteria developed
  • rail profile
  • team provided
  • engineering staff

  • single wheelsets
  • test data
  • loading vehicle
  • proposed criteria
  • survey results

  • transit vehicles
  • wide diversity
  • developed include
  • training seminars
  • validated using

  • flange angles
  • friction coefficient
  • action training
  • developed based
  • track loading


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