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1、英语原文IntelligentTrafficLightControlbyMarcoWieringThetopicIpickedforourcommunityprojectwastrafficlights.Inacommunity,peopleneedstopsignsandtrafficlightstoslowdowndriversfromgoingtoofast.Iftherewerenotrafficlightsorstopsigns,people’sliveswouldbeindangerfromdriversgoingtoofast.Theurbantraffictrendst
2、owardsthesaturation,therateofincreaseoftheroadofbigcityfarlagsbehindrateofincreaseofthecar.Theurbanpassengertraffichasalreadybecomethemainpartofcitytrafficdaybydayandithasusedabout80%oftheareaofroadofcenterdistrict.Withtheincreaseofpopulationandindustryactivity,people'strafficismoreandmorefreque
3、nt,whichisunavoidable.Whatmeansoftransportationpeopleadoptproducespressurecompletelydifferenttocitytraffic.Accordingtocalculating,ifitis1toadopttheareaofroadthatthepublictransportneeds,bikeneeds5-7,carneeds15-25,eventowalkis3timesmorethantotakepublictransits.Soonlybybuildingroadcan'tsolvethecity
4、trafficproblemfinallyyet.Everylargecityoftheworldincreasesthetrafficpolicytothefirstplaceofthequestion.Forexample，accordingtocalculating,whentheautomobileowningamountofShanghaireaches800,000(outsidecarscountseparately),ifitdistributesstillasnowforexample:centerdistrictaccountsforgreatproportion,
5、evenwhenseveralloop-linesandarterialhighwayshavebeenbuiltup,thetrafficcannotbeimprovedmorethanbeforeandthesituationmightbeevenworse.SothetrafficpolicyShanghaimustadopt,orcalledtrafficstrategyisthathaveprioritytodeveloppublicpassengertrafficofcity,narrowthescopeofusingofthebicycleprogressively,co
6、ntrolthescaleofgrowthofthecartrafficinthecenterdistrict,limitthedevelopmentofthemotorcyclestrictly.Therearemoremunicipalsprojectunderconstructioninbigcity.theinfluenceonthetrafficisgreater.Municipalinfrastructureconstructionisoriginallyagoodthingofalleviatingthetraffic,butinthecourseofconstructi
7、ng,itunavoidablyinfluencethelocaltraffic.Someroadsectionsareblocked,somechangeintoanone-waylane,thusthevehiclecanonlytakeadeviousroute.Theconstructionmakestheroadverynarrow,formingthebottleneck,whichseriouslyinfluencethecarf
