Danger warning signs absent
If you have a pre-existing sleep condition (eg; narcolepsy or sleep apneoa) you can just "black-out" whilst driving without any prior warning.
If you suffer from excessive daytime sleepiness or suspect that you have a sleep disorder, consult a sleep medical specialist at a sleep clinic without delay.
If you are drowsy and encounter external factors (eg; bright white light) you may just fall asleep Light helps signal to the brain when it should wakeup and when it should prepare to sleep.
Danger warning signs - 'Red alert'
You are about to fall asleep if you experience any of the warning signs listed below. If you notice any of these signs, stop driving immediately before you experience any more. The first wave of drowsiness behind the wheel has to be a red alert. To ignore it is to court death - if not your death, then someone else's.
Danger warning signs- eyes
Danger warning signs - ears
. Droning or humming in the ears.
Danger warning signs - mouth
.You can't stop yawning
Danger warning signs - body
Danger warning signs -head
Danger warning signs - driving
Danger warning signs - thoughts