This report describes framework and functions of driver rehabilitation in Germany. German driver rehabilitation, highly developed in its legal basis, expertise and quality control, focuses on three target groups: a) drivers with alcohol-related problems, b) drugged drivers, and c) drivers with accumulated demerit points as a result of rather serious offences. Individual driver rehabilitation measure can be divided into two categories: one is applied before one's driving aptitude is in doubt (discussion-led courses are offered to reduce demerit points or to shorten driving ban period), and the other is applied to those whose driving aptitude is in serious question. The latter measure consists of MPU (German abbreviation for Medical Psychological Examination), and so-called § 70 courses to regain driving aptitude, and some other courses. More importantly, quality management of driver rehabilitation is stipulated in relevant laws in order to maintain quality of individual measure offered by MPU agencies and course providers. Implication for Japanese driver improvement measures is discussed.