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1、凯程考研辅导班，中国最强的考研辅导机构，http://www.kaichengschool.com考研就找凯程考研，学生满意，家长放心，社会认可！2015考研英语阅读理解精读P4—工学类Passage4 Issittingintrafficasinevitableasdeathandtaxes?Perhapsnot.Manycountriesnowhavededicatedtraffic-monitoringcentreslinkedtonetworksofcamerasandsensors.Throwintraffic-spottin
2、gaircraft,accidentreportsandtheknownpositionsofbusesfittedwithsatellite-positioninggear,anditispossibletoseeexactlywhatishappeningontheroads.Driverscouldswitchfrombusytoquietroutesandavoidcongestionifonlytheyhadaccesstothisinformation. Andnowtheydo.SystemssuchastheTraffi
3、cMessageChannelandtheVehicleInformationandCommunicationSystem(VICS),inEuropeandJapanrespectively,pipedatafromtrafficcentresintoin-carnavigationsystemsviaFMradiosignals.Driverscanseewherethetrafficisandtrytoavoidit.Honda,aJapanesecarmaker,evencombinesVICSdatawithpositionda
4、tafrom150,000vehiclesbelongingtomembersofitsPremiumClubsothattheycanchoosethefastestlaneonacongestedroad,saysDavidSchrierofABIResearch,aconsultancy. MeanwhileITIS,aBritishcompany,isoneofseveralfirmsexperimentingwithmobile-phonesignalstomonitortrafficonroadsthatlacksensor
5、sorcameras.Itssoftwarehooksintoamobileoperator'snetworkandusesastatisticalapproachtodeducetrafficspeedsasphonesare"handedoff"fromonecelltowertoanother.Thedatamustbecleaneduptoexcludepedestriansandcyclists,butthisideahasgreatpotential,saysMrSchrier. Anotherwaytododgetraff
6、icistopredictwhereandwhenitwillform.InRedmond,Washington,attheheadquartersofMicrosoft,employeeshavebeentestingatraffic-predictionsystemcalledJamBayes.Usersregistertheirroutepreferencesandthenreceivealerts,bye-mailortextmessage,warningthemofimpendinggridlock.JamBayesusesat
7、echniquecalledBayesianmodellingtocombinereal-timetrafficdatawithhistoricaltrends,weatherinformationandalistofcalendareventssuchasholidays.EricHorvitzofMicrosoft,whodevelopedthesystem,saysitisaccurate75%ofthetime,and3,000employeesuseitdaily. AsystemcalledBeat-the-Traffic,
8、developedbyTriangleSoftwareofCampbell,California,withfundingfromtheNationalScienceFoundation,goe
