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Dozing off during driving will seriously affect safety. To this end, the United States Department proposed a series of driving sleepy safety signs, and to remind the driver, if there is one of the following signs should immediately stop their cars and find a place to rest. 1. always wanted to Geshangyanjing, or line of sight is always involuntary transfer. 2. repeated yawning 3. feeling not particularly patient, upset, or sit still. 4. forget just driving a certain distance; 5. it is difficult to focus; 6. unwittingly driving into another lane; 7. can not be aware of traffic identification, can not maintain the distance between vehicles, drive too fast or too slow; 8. feeling back acid, dry eyes, breathing shallow. 2010-01-04
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