Psychotechnic and SRC Certificate For our service drivers, we launched the Psychotechnical Assessment Test, an important criterion for selecting a safe driver, for the first time in 2001. The mental and physical characteristics and competences of the drivers are measured. Drivers who do not have a Psycho-technical Qualification Certificate can not work in the transportation sector. In the tests conducted, many issues such as driver's level of attention, level of reasoning, speed and distance perception, visibility and coordination ability, response quality and speed, visual continuity, tachistoscopic traffic perception, continuous attention and problem solving are emphasized.