Abstract
Hypnotics, sedative, psychotropic drugs, analgetics, stimulants and psycho-pharmaca, neuroleptica, anti-depressives and tranquillizers influence the working of the central nervous system, heart and blood pressure, functions of the senses and functions of the neuro-muscular system. Research should be done to their influence on the driving process, but it can be stated already that certain requirements for caution can be given.