Theoretical reflections pointed out the limited safety benefit of screening procedures: even under
unrealistically “good” conditions (high prevalence of impairment, high risk associated with
impairment, test specificity and sensitivity of 100 %) in six out of seven drivers the licence
withdrawal would not have any effect on road safety. More realistic examples showed that the
results would be even worse, as many false positive results would be produced. Also, the real‐life
experience in Finland showed that population screening for elderly drivers might even have
negative effects. No safety benefits among car drivers could be assessed, whereas the risk of fatal
injuries among the older, vulnerable road users increased.