1993 GMC Suburban Owner's Manual - Page 214

Highway Hypnosis Is thereactuallysuchaconditionas"highwayhypnosis?"Or is it just plain falling asleepatthewheel?Call it highwayhypnosis,lack ofawareness,or whatever. There is somethingaboutaneasystretchofroadwiththesamescenery, alongwiththehum of thetires on theroad,thedrone of theengine, and the rush of thewindagainst the vehiclethat can make you sleepy.Don't let it happentoyou! If it does,yourvehiclecanleavetheroad in less than a seeond, and youcouldcrashandbeinjured. Whatcanyou happen. do abouthighwayhypnosis?First,beawarethat it can Then here aresometips: 8 Makesureyourvehicle is wellventilated,withacomfortably cool interior. 8 Keepyoureyesmoving.Scantheroadaheadand to the sides.Check yourrearviewmirrorsfrequently and your instruments from time to time. Thiscanhelpyouavoidafixedstare. Weargoodsunglasses in brightlight.Glarecancausedrowsiness.But don'twearsunglassesatnight.Theywilldrasticallyreduceyouroverall visionattheverytimeyouneed all theseeingpoweryouhave. * If you getsleepy, pull off theroad into arest,service,or parking area or both.Forsafety,treatdrowsiness and takeanap,getsomeexercise, on thehighwayasanemergency. As in anydrivingsituation, keep pacewithtrafficandallowadequate followingdistances. 4-46