1993 GMC Safari Owner's Manual - Page 180

Your Driving and the Road Sinceyoucan'tsee as well,youmayneed to slowdownandkeep to tell howfast morespacebetweenyouandothervehicles.It'shard thevehicleaheadisgoingjust by lookingatitstaillights. Slowdown,especially onhigherspeedroads.Your uponlysomuchroadahead. In remoteareas,watchforanimals. If you'retired,pullofftheroad headlightscanlight in asafeplaceandrest. Night Vision No onecanseeaswellatnightas in thedaytime.But as we getolder thesedifferencesincrease. A 50-year-olddriver mayrequireatleasttwiceas muchlight to seethesamethingatnight as a 20-year-old. if Whatyou do inthedaytimecanalsoaffectyournightvision.Forexample, youspendtheday in brightsunshineyouarewise to wearsunglasses.Your eyeswillhavelesstroubleadjustingtonight. But if you're driving, don't wearsunglassesatnight.Theymaycutdownon lot of thingsinvisiblethatshould glarefromheadlights,buttheyalsomakea remainvisible-suchasparkedcars,obstacles,pedestrians, oreventrains blocking railway crossings. Youmaywant to put onyoursunglassesafteryou have pulled intoabrightly-lightedservice orrefreshmentarea.Eyesshielded to darknessbackontheroad.But fromthatglaremayadjustmorequickly besure to removeyoursunglassesbeforeyouleavetheservicearea. You canbetemporarilyblindedbyapproachinglights.Itcantakeasecondor two,orevenseveralseconds,foryoureyes to readjust to thedark.When youarefacedwithsevereglare(asfromadriverwhodoesn'tlowerthe high beams,oravehiclewithmisaimedheadlights),slowdownalittle.Avoid If there is aline of opposing staringdirectlyintotheapproachinglights. traffic, make occasionalglancesovertheline of headlights to makecertain that oneof thevehiclesisn'tstarting to move into your lane.Onceyouare past the brightlights,giveyour eyestime to readjustbeforeresumingspeed. High Beams If thevehicleapproachingyouhasitshighbeams on,signalbyflickingyours to highandthenback to lowbeam.This is theusualsignal to lowerthe headlight beams. If theotherdriverstilldoesn'tlowerthebeams,resistthe temptation to put your high beamson.Thisonlymakestwohalf-blinded drivers. 4-24