Abstract: Drowsiness driving is one of the causes of traffic accidents and it is known that the risk is higher than drunk driving. Therefore, there is a growing interest in developing a system that warns driver’s drowsiness and research has shown that analyzing the driver’s information records is effective in detecting driver fatigue and drowsiness. This research collects biometric data such as driver’s biometric information, vehicle internal temperature and humidity information and current position display. Prior to the development of prototype App. which transfers the collected biometric data values to the smartphone application and detects the risk values of the drowsiness, environment, arrhythmia as another signal to the driver, we wanted to design the mobile driver safety content (Cockpit App.) UI. From this result, the proposed mobile driver safety content UI design confirmed that the driver was able to confirm the biometric information at a glance.