Keith Vodden Dr. Douglas Smith - Transports Canada

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Appendix A—Detail on Calculations of the Ontario Model Step 2 Allocate additional fatalities based on proportion of major injuries Collision Severity Fatal Injury ORSAR data Additional Fatalilties 50 Fatalilties 10 Major injuries 10 90 Fatalilties 50 + 1 9 Major injuries 10 - 1 90 - 9 Fatalilties 51 9 Major injuries 9 81 In the model for 2004, 7% of major injuries occur in fatal and 93% in injury collisions. As a result, 7% (1) and 93% (13) of the misclassified major injuries are assigned to fatal and injury collision categories respectively. Other years would use different proportions based on the ORSAR data for that year. The additional injuries (over ORSAR estimates) identified through the MOH&LTC data and the Chipman re-analysis are allocated among collisions severity categories based on the proportion (adjusted to allocate vehicles with unknown damage) of demolished vehicles. This is illustrated in the hypothetical example below where 10%, 50% and 40% of the additional injuries are allocated to fatal, injury and PDO collisions to reflect the proportion of demolished vehicles in these collision severity groups. We believe injuries are highly correlated to vehicle damage and have therefore chosen this allocation mechanism for additional injuries. TNS Canadian Facts, Social and Policy Research 121
Analysis and Estimation of the Social Cost of Motor Vehicle Collisions in Ontario Step 3 Allocate additional injuries based on proportion of demolished vehicles Collision Severity Fatal Injury PDO Injuries: Major 50 100 Minor 70 150 Minimal 60 125 Additional injuries: Major 100 Minor 200 Minimal 50 Vehicles damaged: Demolished 10 50 40 Injuries: Major 50 + 10 100 + 50 0 + 40 Minor 70 + 20 150 + 100 0 + 80 Minimal 60 + 5 125 + 25 0 + 20 Injuries: Major 60 150 40 Minor 90 250 80 Minimal 65 150 20 Exhibit A-4 provides the allocation of extra injuries based on the distribution of demolished vehicles for 2004. In other years the allocation of additional injuries will be based on the proportion of demolished vehicles by collision severity in the year in question. 122 TNS Canadian Facts, Social and Policy Research
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TP 14800F Analysis and Estimation o
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APPENDIX A: DETAIL ON CALCULATIONS
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• Large truck. Collisions involvi
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ABBREVIATIONS CAC Criteria Air Cont
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Analysis and Estimation of the Soci
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III ONTARIO MODEL This chapter desc
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Ontario Model redistribution. Simil
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Ontario Model • Pedestrian Injure
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Ontario Model Based on this analysi
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Ontario Model Step 3 Allocate addit
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Ontario Model damaged based on this
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Ontario Model 1. Number of total an
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Ontario Model 2.99; specialist—1.
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Ontario Model 5. Tow trucks Tow tru
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Ontario Model Exhibit III-5 Core WT
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Ontario Model We combine this value
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Ontario Model 6. Ambulance The Onta
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Ontario Model individuals who self-
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Ontario Model threatening injury, p
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Ontario Model d) Additional Polluti
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Ontario Model VARIABLE DATA LOST TI
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Ontario Model We have no data to gu
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V ONTARIO SUB-MODELS AND THEIR SOCI
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Ontario Sub-Models and Their Social
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Page 79 and 80: Analysis and Estimation of the Soci
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APPENDIX D: VALUE OF HUMAN CONSEQUE
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Appendix D—Value of Human Consequ
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APPENDIX E: REFERENCES Audrey, J. a
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