Keith Vodden Dr. Douglas Smith - Transports Canada

Analysis and Estimation of the Social Cost of Motor Vehicle Collisions in Ontario
D. CHANGES TO THE CANADIAN JURISDICTIONS MODEL
Unadjusted data on the collisions characteristics for each Canadian jurisdiction is
entered into Spreadsheet C1. These data are obtained from TRAID for 2004.
Data on collision characteristics can be replaced by similar data for other years—
for example 2005. In so doing the model automatically updates all calculations based on
the new collision data input into Spreadsheet C1. When making changes to the data in the
model, the analyst should also record the year that the new data represents in cell C1!A2.
This will automatically record the year for the collision data in other spreadsheets.
The most likely users of the Canadian Jurisdictions Model will be individual
jurisdictions. As a result the model was designed to provide jurisdiction-specific
estimates of the social costs of the motor vehicle collisions. These estimates are produced
once the user transfers the revised and adjusted data automatically produced by the model
from Spreadsheet C1.3 to corresponding cells in Spreadsheet C2. This is done by copying
cells from Spreadsheet C1.3 and pasting them (using the Paste Special/Values function in
Excel) to Spreadsheet C2. (For Newfoundland and Labrador appropriate cells to copy
from Spreadsheet C1.3 are C1.3!A25:C1.3!F43.) The model then automatically calculates
the social cost of collisions occurring in the jurisdiction in Spreadsheet C3.
The model can be used to calculate the social cost of motor vehicle collisions
occurring in all jurisdictions by copying total collision characteristics automatically
calculated for Canada from Spreadsheet C1.3 (correct cells for Canada from Spreadsheet
C1.3 are C1.3!A5:C1.3!F23) and pasting them (using the Paste Special/Values function in
Excel) to Spreadsheet C2.
The model records the social costs for all jurisdictions and for Canada in
Spreadsheet C3T.
E. MORE ADVANCED CHANGES TO THE MODELS
Calculations in the Ontario model are based on factors derived from data collected
in the study. These data, the calculations based on them, and the derived factors used in
analyses are provided in Spreadsheet B. The analyst has the opportunity to change any of
these derived factors either by assuming different factors or by entering new data in place
of the data collected during the study. The most likely changes to the model are noted in
this section.
1. Price indices
The model uses three separate price indices for values related to human
consequences (Statistics Canada, The Labour Market, 71-222-XWE), health care costs
(Statistics Canada, Consumer Price Index, Health Care Services), and all other cost items
(Statistics Canada, Consumer Price Index, All Items). Actual values for these indices are
162 TNS Canadian Facts, Social and Policy Research