Group Profiling for Alcohol Impaired Motorists with Driving Skills Disparities: Should we Care for Fairness?
AbstractA game theory model with incomplete and imperfect information is proposed here to understand the decision faced by motorists, from two identifiable groups, to drive under the influence of alcohol. In order to assess the best implementable policy, the rational decision from a traffic police force to engage in a group profiling policy strategy is described. We also suggest a perfect bayesian equilibrium solution, provinding conditions of existence and uniqueness. The predictions from this model suggest that, if there exist disparities in the driving skills for both groups when motorists are impaired by alcohol, traffic police officers should stop and administrate a breath alcohol test to a higher proportion of motorists from the group with the largest violation rate. Therefore, we suggest that group profiling through a statistical discrimination procedure is feasible. However, if there is no statistical evidence to support such disparity, only a fair policy -that is, to stop and test motorists from both groups with the same intensity- is implementable. In this latter case, we suggest that a biased behavior in policing is explained by prejudice or taste-based discrimination.
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Date of creation: 29 Sep 2011
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