As the transportation sector is one of the most significant contributors of air pollution in major cities, it is a requirement for cities with high population density and high growth of vehicles to promote green transportation in order to reduce CO2 emissions as obligated by Kyoto Protocol. The operation of Bus Rapid Transit (BRT) in Jakarta and Hangzhou are selected and analyzed using SWOT analysis to review the strengths, weaknesses, opportunities and threats of the system. The analysis found that BRT is effective and efficient in promoting green transportation. A further analysis is conducted through transportation policy instruments that consist of planning, regulatory, economic, information and technological instruments in order to apply BRT system to other cities of developing countries.