|
Impact of the graduated driver licensing program in Nova
Scotia
Report from the Traffic Injury Research Foundation
Method: Dependent Variables
The objective of the Nova Scotia program is to reduce the incidence of crashes
involving new drivers, so the primary dependent measure for the study was
all collisions, which includes those involving a fatality, injury, or property
damage. However, most collisions involve just property damage – e.g., in
1997 in Nova Scotia almost 70% of all collisions involved property damage
only. Accordingly, a composite measure based on all collisions will, in
fact, reflect changes primarily in property damage collisions. This index
may be somewhat insensitive to the impact of the program on serious crashes
– those involving injury or death. Accordingly, the evaluation also measured
changes in casualty collisions separately, although it was not possible
to disaggregate injuries and fatalities, due to the small number of fatalities
each year. 
|
|
|
