side-lightsinstalledonthewingmirrors.Manypeoplethinkthatitisonlytomakethecarlook
moreattractivebutthereasonbeingstudyshowsthattheside-lightsaremoreeffectivewhen
placed on the wing mirrors instead of being installedon the bumpers.
TheUSandCanadarequirecarstohaveasidemirrorhavingthe1:1reflection;inotherwords,
thevehiclesshouldhaveaplanemirror.However,thestudysaysthathavingaplanemirror
limitsthefieldofviewofthedriver.Also,ifthegoalwastoincreasethefieldofviewusinga
plane mirror, the mirror size was too big for thesize of the car.
MostofthecountriesexceptNorthAmerica,havetherulesofusingasidemirrorthatcanbe
named,planar,convexandasphericmirrors.Withthehelpofscience,onecaneasilyprovethat
accordingtothedistancebetweenthedriverandthesidemirroronlyconvexoranaspheric
mirrorcanprovidethebestfieldofviewforthedriver.Butoneofthepropertiesoftheconvex
mirroristhatittendstominimisethefar-awayobject.Thus,therearechancesthatadriver
mistakesaminimisedcarasacarthatisfarawayandtakesdecisionsaccordingly.Itcanleadto
fatalaccidents.Thusthesideviewmirrorsindifferentcountriescomeswithalinewrittenon
them-“OBJECTSINTHEMIRRORARECLOSERTHANTHEYAPPEAR“,towarnthedriverabouttheactual
distance between his and the next cars.