Goel, DeeptiGupta, Sonam2015-11-052015-11-052015-10https://hdl.handle.net/10986/22878The Delhi Metro (DM) is a mass rapid transit system serving the National Capital Region of India. It is also the world’s first rail project to earn carbon credits under the Clean Development Mechanism of the United Nations for reductions in CO2 emissions. Did the DM also lead to localized reduction in three transportation source pollutants? Looking at the period 2004–2006, one of the larger rail extensions of the DM led to a 34 percent reduction in localized CO at a major traffic intersection in the city. Results for NO2 are also suggestive of a decline, while those for PM25 are inconclusive due to missing data. These impacts of pollutant reductions are for the short run. A complete accounting of all long run costs and benefits should be done before building capital intensive metro rail projects.en-USCC BY 3.0 IGOFREIGHT TRAFFICROAD TRANSPORTVEHICLE REGISTRATIONSACCESSIBILITYTRENDRAPID RAILRAIL TRANSITROLLING STOCKMETRO RAILPOLLUTIONTOLLTRANSPORT POLICY INSTITUTEEMISSIONPOPULATION DENSITYTRIPMETRO RAIL CORPORATIONROADURBAN RAIL TRANSITSAFETYPOLLUTION CONTROLTRAFFIC CONGESTIONCOMMUTERSCARBON CREDITSTRANSPORT SECTORPASSENGERSNEIGHBORHOODSMOTOR VEHICLESHEAVY GOODS VEHICLESNOISE POLLUTIONROADSRAIL LINESPUBLIC TRANSPORTATIONRIDERSHIPRAIL PROJECTSCARSPOPULATION DENSITIESROUTEDEMAND FOR TRANSPORTATIONTRAVEL DEMANDTRANSPORT SYSTEMDRIVERSAIR POLLUTANTSAMBIENT AIR POLLUTIONDEMAND FOR TRAVELDIESELSUBURBSFREIGHTTRANSIT SYSTEMSENVIRONMENTAL REGULATIONSAIRCAR FUELVEHICLEGOODS VEHICLESPOLLUTANT EMISSIONSTRANSPORT INFRASTRUCTUREBUS TRANSITNOISEPUBLIC TRANSPORT INFRASTRUCTURERAIL TRANSIT SYSTEMMODERN TRANSPORT SYSTEMRIDERSHIP DATADRIVING RESTRICTIONSURBAN TRANSPORTSAFETY OF PASSENGERSCOSTS PER PASSENGER MILERAIL NETWORKTRANSPORTATIONSUBWAYTRANSIT SYSTEMTRIPSAIR POLLUTIONAVERAGE VEHICLE OCCUPANCYMEANS OF TRANSPORTEMISSION STANDARDSTRAVELCONGESTIONBUS TRANSPORTATIONCONGESTION PRICINGBUSRAIL TRAVELEMISSIONS STANDARDSTAXISFUELCONGESTION ON ROADSTRANSPORT POLICYURBAN RAILTRANSPORTATION POLICIESMODERN TRANSPORTRAIL TRANSIT CRITICISMELASTICITIESROUTESTRANSPORT ECONOMICSTRAVEL ACTIVITYHIGHWAYSTRUCKSVEHICLE OCCUPANCYVEHICLE- KILOMETERSURBAN RAIL TRANSIT SYSTEMSCLIMATE CHANGETRAFFICJOURNEYRAILCARBON MONOXIDEAIR QUALITY STANDARDSTAXACCIDENTSINTERSECTIONSPASSENGER TRAVELPRIVATE VEHICLESDRIVINGRAIL TRANSIT SYSTEMSRAPID TRANSITROAD EMISSIONSBUSESTRANSITPUBLIC TRANSPORTPRIVATE TRAFFICTRIP DISTANCETRUEBUS SERVICESTRANSPORT INVESTMENTTRANSPORT RESEARCHELASTICITYPOLICIESWATER POLLUTIONVEHICLESTRAVEL MODEFARESRAIL SYSTEMSCARTRAVEL MODESMODE OF TRAVELECONOMIES OF SCALEEMISSION FACTORSEMISSIONSEMISSIONS ANALYSISCOSTSURBAN BUSMASS RAPID TRANSITTRANSPORTAVERAGE TRIP DISTANCEBUS OPERATORSTRAVEL BEHAVIOURINFRASTRUCTURECOST- BENEFIT ANALYSISTRAFFIC OPERATIONSRAIL PROJECTROAD CONGESTIONCAPITAL INTENSIVE PROJECTSWorking PaperWorld Bank10.1596/1813-9450-7448