Background: Driving a motor vehicle could be central to the functional autonomy of patients with psychiatric illnesses. For patients, a driver's license could mean independence, the ability to care for themselves, and the freedom to travel when they wish. However, both psychiatric disorders and psychiatric drug treatments can produce changes in perception, information processing and integration, and psychomotor activity that can disturb and/or interfere with the ability to drive safely.Objective: To assess the fitness to drive of psychiatric outpatients in a sample representative of current clinical practice.Method: Cognitive functioning and psychomotor performance of 208 consecutive psychiatric outpatients treated in a community mental health center in the Canary Islands (Spain) were assessed in different clinical situations. The LNDETER 100 battery, an electronic assessment unit-based measurement that consists of 5 screenbased tests, was used to assess concentrated attention and resistance to monotony, multiple discriminative reactions and their correctness, anticipation of speed, bimanual coordination, and the decision making process and tendency to assume risk. The study was conducted from