This paper, describes a novel technique that detects a drivers state using Ultra Wide Band(UWB) radar. UWB radar can measure both human vital signs and movement simultaneously with just one device. It is an improvement on existing Driver State Monitoring(DSM) systems because is much cheaper and lighter. And UWB radar can be used all day and night in all weather conditions without contacting the driver. The experiments result shows the possibility of using UWB radar for monitoring driver state.