TherearemanydifferencesbetweenAmericaandChina.Ifeelthatthebiggestdifferenceis.InAmericatherearetoomuchmorecarsthaninChina;maybethenumberofcarsinCaliforniaisthesameasthenumberinChina.ButthereareveryfewertrafficjamsandaccidentsinAmericathaninChina.Wehardlylookattrafficpoliceinthestreet,butallcarsobeystrictlytrafficrules,andpeoplehardlyfindthatacardoesnotobeytrafficrulesstoppinginthestreet.

　　AboutAmericantrafficrules,Ifeelthattherearemanybetterterms,suchas:

　　1.Stopline:therearestoplinesinallcrossingwithouttrafficlightandallcarsmuststopwhilemeetingthestopline.

　　2.Trafficlight:therearetrafficlightsinthecrossingoftheroad.Carsmayalmostturnineverydirection;thetrafficlightcangivesignalstepbystepincludingu-turn.Thereisakindofmiddlelaneofturningleft.Whenacarwantstoturnleftintheroad,hemayenterintothemiddlelaneofturningleftandgiveasignalofturningleft.Whenhethinksit’ssafe,hemayturnleft.

　　3.Specificitem:aboutparking,therearethreekindsoflines(itscolorsiswhite,blueorred)intheroadside.Everylinemayparkdifferentkindofcar.Therearemanystreetsinsomeresidentialareas,andthereisakindofrulethatanycarcannotparkatanytimeoranyperiodtime.Inmanyconditionstheorderofpassingisalsogivenveryspecifically.Ifpeoplewanttochangethelaneorturn,theymustlookbehindandmakesureit’ssafe.Onlyso,theymaydoit.