ABSTRACT
BRT combines the power and speed of light rail tram or subway, also the flexibility, low cost and simplicity of the bus system. Meantime BRT has a positive impact on reducing the cumulative CO2 emission and improving the ecological situation in the cities as a public transportation. A conceptual framework is developed in this study to facilitate the assessment of CO2 over the life cycle of BRT project. The model takes into account the emissions generated through the construction of the BRT facilities and the operations of BRT buses. Almaty BRT is conducted as a case study to show how the conceptual framework can be implemented to assess the CO2 emissions. Results shows the operation stage is the biggest contributor of the total CO2 emission of project. However, the construction stage should not be overlooked because the density of CO2 emission is much higher than that of operation stage.
