1993 GMC Suburban Owner's Manual - Page 209

Tips on Driwhg In Fog If yougetcaught in fog, turn yourheadlightsonlowbeam,even in daytime. if yourvehicle has them. You'llsee-and be seen-better.Useyourfoglights Don'tuseyour high beams.Thelightwillbounce makeupfog and reflectbackatyou. off thewaterdropletsthat Use yourdefogger. In high humidity,evenalightbuildupofmoisture on the inside of the glass will cut down on youralreadylimitedvisibility.Runyour windshieldwiperandwasheroccasionally.Moisturecan build up on the outsideglass, and whatseemsto be fogmayactually be moistureonthe outside of your windshield. Treatdense fog asanemergency. Try to find a place topull off theroad. Of courseyouwant to respectanother'sproperty,but you mightneed to put somethingbetweenyou and movingvehicles-space,trees,telephonepoles, aprivatedriveway,anythingthatremovesyoufromothertraffic. If visibility is nearzero and youmuststopbutareunsurewhetheryouare awayfromtheroad, turn yourlightson,startyour hazard warningflasher, and soundyourhornatintervals orwhen you hearapproachingtraffic. Passothervehicles in fogonly if you can seefarenoughaheadtopass safely.Eventhen,be prepared todelayyourpass if yoususpectthefog is to passyou,make it easyforthem. worseupahead.Ifothervehiclestry 4-41