Crash data
Crash, crashes
BLIND
Police-reported crash data will be accessed through each of the three states’ respective Department of Transportation and will be used to assess the trial’s primary hypothesis. Participants’ licence numbers (collected in the pre-trial questionnaire) will be used to access police-reported crash data. Crash data obtained will include not only binary data, i.e., ‘yes/no’ data on whether a driver was involved in a crash, but also the number of crashes (if the driver was involved in more than one). Data will be obtained for all drivers – both the intervention and control groups – blind to group status.