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[Drivers' random controls and population's recent drug use monitoring].

Substance abuse, particularly among young people, does not seem to have the tendency to decrease. Our knowledges on this phenomenon are manifold and they validly compete to address the actions of contrast. Nevertheless, it would seem profit to be able to have further informations, to place side by side to those already existing, with the aim to improve the surveillance of the phenomenon. For this purpose, in the present paper we propose a monitoring model based on the results of random controls on road, carried out by the Police (or by the Hospital) in relationship to the road safety. The representativeness of the data that we could get this way appears elevated as an hight percentage of the population own the driver's licence. As it is shown, these controls could be both individual and related to drivers' pools of biological samples. This last approach would seem to be more practicable since problems relating to the drivers' privacy would be avoided.