体关于出租车计费器,空调,广告等问题。原文:Cairoisknownforitsovercrowdedroads,irregulardrivingpracticesandshakyoldvehicles,butalsoforitsairpollution.Inrecentmonths,though,environmentalstudiesindicatetherehavebeensignsofimprovement.That’sdueinparttotheremovalofmanyofthecapital’sold-fashionedblackandwhitetaxis.Mostofthesedatedbacktothe1960sand70sandwereinapoorstateofrepair.Afternewlegislationdemandedtheirremovalfromtheroads,alowinterestloanschemewassetupwiththreeEgyptianbankssodriverscouldbuynewcars.Thegovernmentpaysabout$900foroldonestobediscardedandadvertisingonthenewvehicleshelpscoverrepayments.Theideahasprovedpopularwithcustomers―theycannowtravelinair-fortandbecausethenewcabsaremetered,theydon’thavetoargueoverfares.Banksandcarmanufacturersaregladfortheextrabusinessintougheconomictimes.Asforthetaxidrivers,mos