Mental task is one of city transportation driver jobs related to concentration and ability to control the visual information received. Superior mental ability is a necessity in order to control the car properly to avoid accident. To obtain information related to provision of stretching treatment of drivers to improve their response speed. Stretching treatment and response speed measurement were done in the morning and afternoon. To achieve the purpose, the research was conducted in following stages: (1) determining the route/path of city transportation, (2) searching for 30 respondents/drivers with age ranges of 25 up to 60 years, (3) determining the stretching movements, named D-Stretch, and (4) time setting of stretching treatment. The time treatments were grouped into following three groups: (1) without stretching, (2) stretching in the noon and (3) stretching in the morning and noon. Measurement of driver response was done by props tool, the drivers is asked to provide a response to props; the response speed is recorded in camera. The research findings showed that without morning stretching the response speed or speed in the afternoon slower. Stretching time in the morning and noon could increase the response speed in the afternoon. The drivers had more swiftly response to represents a decrease in fatigue and stress. The conclusion was stretching treatment in the morning and noon will provide a positive contribution to driver alertness, particular city transportation drivers. The response speed of driver became better and faster. Stretching treatment in the noon will gave a positive contribution to driver alertness in car to drive public transportation or faster response speed and driver becomes more awake
