For city residents, a sustainable city with sustainable mobility is now the most desired feature. This is a crucial necessity, especially for numerous places like Dhaka. Bangladesh's capital is Dhaka. It is the economic, cultural, and political hub of the country. Transportation expansion is outpacing the city's ability to sustain itself. Dhaka's transportation industry is one of the city's biggest contributors to GHG (greenhouse gas) and other air pollutants. The two low-emission scenarios for Dhaka's transportation sector are analyzed in this paper. This article discusses the cobenefits of Bangladesh's CNG regulations, as well as the willingness and impact of utilizing more non-motorized vehicles on the environment. It also emphasizes how much emissions we may minimize and future regulations for sustainable transportation in Dhaka.