[A drug evaluation and classification program in the USA--also a model for Germany].

The question of recognition and possibilities of proof regarding impairment by narcotics and drugs is gaining significance also in Germany. Therefore, it is necessary to deal more closely with the United States "Drug Evaluation and Classification Program" and consider its application in Germany as well. The American program is based on standardized education of drug recognition expert trainees and well-tested methods of examination. The results are convincing. The expert reports prepared by the examiners and the chemical-toxicological results correlate in 80 to 97% of the cases. As long as no definite findings regarding dose/concentration effect relationships exist, the classification of behavior, appearance and medical examination plays a significant role. To a great extent, the program makes allowance for the existing possibilities in Germany as well. The authors of this article would consider it to be wrong if, in Germany extensive, time-consuming field studies were undertaken to obtain further knowledge prior to introduction of such a program. On the other hand, despite the existing difficulties, it should be endeavored to find dose/concentration effects.