Costs and Emissions Appraisal Tool for Transit Buses

Document Type


Publication Date


Subject Area

mode - bus, infrastructure - fleet management, infrastructure - vehicle, technology - alternative fuels, technology - emissions, policy - environment, policy - sustainable, economics - capital costs, economics - operating costs


Transit buses, Emissions, Fuel type


The Costs and Emissions Appraisal Tool for Transit Buses (“the Tool”) is intended to help bus operators and transit agencies make informed decisions about alternative bus types during the preliminary analysis phase and to help them determine whether the transition to a “clean feet” is fnancially viable and worthwhile based on expected emissions reductions. The Excel-based Tool allows users to compare the cost and emissions reductions of two bus feets, each composed of up to three bus types. Bus types can difer in terms of fuel type, the technology used to achieve diferent emissions standards, and length. Users can input fuel and vehicle unit cost data for a city or country. If they lack these data, they can use the default data for Brazil and the United States included in the Tool. Based on either the inputted or default data, the Tool calculates the costs and emissions of each bus type and the total costs and emissions of each feet. Application of the version of the Tool presented here should identify gaps in user needs, which the authors hope to address in subsequent versions. Updates will also expand the default cost data to include other locations in the developing world.


Copyright remains with World Resources Institute.


Available online at: publication/transit-buses-tool