Keith Vodden Dr. Douglas Smith - Transports Canada

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Appendix A—Detail on Calculations of the Ontario Model For 2004, the model transfers 12 collisions from injury to fatal collisions. These collisions involve 13 fatalities, 5 major injuries, 25 minor injuries, 16 minimal injuries, and the following number of vehicles by damage severity: 12 demolished, 3 severe, 3 moderate, 2 light and 1 none. Similarly the model uses the characteristics of injury collisions 1 to determine the number and characteristics of collisions to transfer from the revised PDO category to the injury collision category. However, the correct number of collisions to transfer will vary depending on which severity category of injury is selected to base the transfer. As a result, the decision on the maximum number of collisions needed to transfer all injuries is model determined based on the characteristics of the data. The model transfers injuries in the proportion they occur in these collisions up to the maximum number by severity category initially allocated to PDOs. It also transfers the expected number of vehicles damaged based on this number of collisions. This is illustrated in the next hypothetical example. In this example the average injury collision involves 1 injury and 3 vehicles. Given 10 injuries allocated to PDOs, the model would identify that 10 collision needed to be transferred involving all 10 injuries and 30 vehicles. (The hypothetical example does not illustrate that the decision on how many collisions to transfer is based on the number needed to transfer all injuries of each injury severity.) The 10 collisions are transferred to injury collisions increasing the total from 100 to 110. Similarly, PDO collisions are reduced by 10 from 260 to 250. Characteristics of the collisions are also transferred with offsetting increases for injury collisions and decreases for PDO collisions in the number of injuries and vehicles involved. and 0.07 none. 1 Each injury collision includes 0.09 major injury, 0.96 minor injury, 1.02 minimal injury and the following vehicles by damage level: 0.21 demolished, 0.45 severe, 0.52 moderate, 0.52 light and 0.18 none. TNS Canadian Facts, Social and Policy Research 125
Analysis and Estimation of the Social Cost of Motor Vehicle Collisions in Ontario Step 5 Transfer of PDO collisions involving injuries to injury collisions based on characteristics of injury collisions Collision Severity Injury PDO Collisons 100 260 Injuries 100 10 + Vehicles damaged 300 30 500 Injury PDO Collisions 100 10 250 Injuries 100 + 10 Vehicles damaged 300 30 500 Injury PDO Collisions 110 250 Injuries 110 Vehicles damaged 330 500 Exhibit A-6 provides an example drawn from the 2004 data to illustrate this procedure to identify the number of collisions to transfer based on the number of injuries by injury severity. 126 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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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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