Railway Track & Structures - October 2007 - (Page 39) Table 2, above: Prioritization indices for locations flagged for poor response. Figure 3, right: Derailment investigation predictions for high c.g. hopper car. a track-geometry-defect risk model, which quantifies the risk of occurrence of a critical geometry defect (e.g., FRA violation) and allows the railways to adjust their track geometry car test schedules to reduce that risk. The second is a vehicle/track-geometry risk model that identifies and prioritizes locations with track geometry conditions that have a high potential for vehicle/track-geometry-related derailments. Both approaches make use of the data provided by track geometry inspection cars. The risk-based track geometry-inspection scheduling methodology uses a risk-based approach for the identification of high-risk locations and the adjustment of the geometry car testing schedules based on that risk. As such, the risk-based theory evaluates track geometry defects and traffic conditions, along with historic testing frequencies, to determine the optimal testing frequency. Risk is defined as the number of critical defects per mile, where a critical defect corresponds to an FRA track geometry defect. As in the case of rail-test scheduling, the acceptable level of risk must be defined in terms of a number of key parameters www.rtands.com Railway Track & Structures October 2007 39 http://www.rtands.com
Table of Contents Feed for the Digital Edition of Railway Track & Structures - October 2007 Railway Track & Structures - October 2007 Contents On Track Industry Today Supplier News AREMA News NRC News TTCI R&D Crossties by the Billions Provide Essentials for Full Support Modern Tools Manage Risk M/W Challenges: Better Management of Thermal Forces in CWR TTCI Celebrates 25 Years as Facility, 10 as Part of AAR Products and Literature People Calendar Sales Representatives Website Directory Advertisers Index Professional Directory Classified Advertising Chicago Perspective Railway Track & Structures - October 2007 Railway Track & Structures - October 2007 - Railway Track & Structures - October 2007 (Page Cover1) Railway Track & Structures - October 2007 - Railway Track & Structures - October 2007 (Page Cover2) Railway Track & Structures - October 2007 - Contents (Page 1) Railway Track & Structures - October 2007 - Contents (Page 2) Railway Track & Structures - October 2007 - On Track (Page 3) Railway Track & Structures - October 2007 - On Track (Page 4) Railway Track & Structures - October 2007 - Industry Today (Page 5) Railway Track & Structures - October 2007 - Industry Today (Page 6) Railway Track & Structures - October 2007 - Supplier News (Page 7) Railway Track & Structures - October 2007 - Supplier News (Page 8) Railway Track & Structures - October 2007 - Supplier News (Page 9) Railway Track & Structures - October 2007 - AREMA News (Page 10) Railway Track & Structures - October 2007 - AREMA News (Page 11) Railway Track & Structures - October 2007 - AREMA News (Page 12) Railway Track & Structures - October 2007 - AREMA News (Page 13) Railway Track & Structures - October 2007 - AREMA News (Page 14) Railway Track & Structures - October 2007 - AREMA News (Page 15) Railway Track & Structures - October 2007 - NRC News (Page 16) Railway Track & Structures - October 2007 - NRC News (Page 17) Railway Track & Structures - October 2007 - NRC News (Page 18) Railway Track & Structures - October 2007 - NRC News (Page 19) Railway Track & Structures - October 2007 - NRC News (Page 20) Railway Track & Structures - October 2007 - TTCI R&D (Page 21) Railway Track & Structures - October 2007 - TTCI R&D (Page 22) Railway Track & Structures - October 2007 - TTCI R&D (Page 23) Railway Track & Structures - October 2007 - TTCI R&D (Page 24) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 25) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 26) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 27) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 28) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 29) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 30) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 31) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 32) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 33) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 34) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 35) Railway Track & Structures - October 2007 - Crossties by the Billions Provide Essentials for Full Support (Page 36) Railway Track & Structures - October 2007 - Modern Tools Manage Risk (Page 37) Railway Track & Structures - October 2007 - Modern Tools Manage Risk (Page 38) Railway Track & Structures - October 2007 - Modern Tools Manage Risk (Page 39) Railway Track & Structures - October 2007 - Modern Tools Manage Risk (Page 40) Railway Track & Structures - October 2007 - Modern Tools Manage Risk (Page 41) Railway Track & Structures - October 2007 - M/W Challenges: Better Management of Thermal Forces in CWR (Page 42) Railway Track & Structures - October 2007 - M/W Challenges: Better Management of Thermal Forces in CWR (Page 43) Railway Track & Structures - October 2007 - M/W Challenges: Better Management of Thermal Forces in CWR (Page 44) Railway Track & Structures - October 2007 - M/W Challenges: Better Management of Thermal Forces in CWR (Page 45) Railway Track & Structures - October 2007 - TTCI Celebrates 25 Years as Facility, 10 as Part of AAR (Page 46) Railway Track & Structures - October 2007 - TTCI Celebrates 25 Years as Facility, 10 as Part of AAR (Page 47) Railway Track & Structures - October 2007 - TTCI Celebrates 25 Years as Facility, 10 as Part of AAR (Page 48) Railway Track & Structures - October 2007 - TTCI Celebrates 25 Years as Facility, 10 as Part of AAR (Page 49) Railway Track & Structures - October 2007 - TTCI Celebrates 25 Years as Facility, 10 as Part of AAR (Page 50) Railway Track & Structures - October 2007 - People (Page 51) Railway Track & Structures - October 2007 - Sales Representatives (Page 52) Railway Track & Structures - October 2007 - Website Directory (Page 53) Railway Track & Structures - October 2007 - Advertisers Index (Page 54) Railway Track & Structures - October 2007 - Professional Directory (Page 55) Railway Track & Structures - October 2007 - Classified Advertising (Page 56) Railway Track & Structures - October 2007 - Classified Advertising (Page 57) Railway Track & Structures - October 2007 - Classified Advertising (Page 58) Railway Track & Structures - October 2007 - Classified Advertising (Page 59) Railway Track & Structures - October 2007 - Chicago Perspective (Page 60) Railway Track & Structures - October 2007 - Chicago Perspective (Page Cover3) Railway Track & Structures - October 2007 - Chicago Perspective (Page Cover4)
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