gogo850
Principles
Drivers normally aren’t aware of fatigue driving before the actual accident happens. One of the most important functions of early warning system is to let the drivers understand they are actually in fatigue driving and increase their alertness level. Once the system detects the driver is under fatigue driving, it will send a warning signal immediately to the driver based on PERCLOS (A Valid Psycho-physiological Measure of Alertness) analysis.
 ●    Under some circumstances, a driver probably will fall in sleep suddenly due to fatigue driving; the early warning system will make a sharp and loud sound to awake the driver at that critical time, which is the other very important function of this system.
 ●    When the fatigue warning appears as mentioned above, the driver should pull over immediately to have a rest to avoid accident. If the driver continues to drive without any rest, the system will remind the driver to have a rest with making a sharp and loud sound whenever necessary

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