The Centre for Accident Research and Road Safety – Queensland (CARRS-Q) at the Queensland University of Technology in Brisbane, Australia was commissioned to survey 32 international road safety experts in 13 countries. Most of the experts worked in universities, the government and public sector, and the not-for-profit sector. Their expertise covered the fields of road transport and road safety, human factors and ergonomics, and mobile phone distracted driving.
Among other things, these experts were asked to estimate the crash risk associated with young novice drivers’ engagement in eight different risky driving behaviours. They gave their opinions about the likelihood of young novice drivers having a crash as a result of persistently engaging in eight different risky driving behaviours (as opposed to a similar driver who does not engage in them). For each specific behaviour, experts could scale the risk between 1 (no change in risk) and 5 (five or more times the risk). Their responses were then averaged to give the final overall risk score.