This study explores the possible approaches and methods to calculate the carbon footprint from its road activities and their total contributions on overall activities of the Asian Development Bank"s South Asia Department in India. India was selected for this study because it represents all types of SARD activities (highways, national roads, and rural roads) and the project locations range from urban to rural areas with different ecological conditions. A model of calculating carbon footprint-construction, operation, and maintenance - of road projects was developed, and this model was tested and presented using data from SARD projects in India.