Fossil fuel is increasingly used in vehicles such as Buses and Trucks. Fossil fuels are also used in the manufacturing and energy sectors to generate electricity. The use of fossil fuels would increase Greenhouse gases, which will badly affect the environment. Many researchers have been proposing methods and schemes to protect the domain from the effect of greenhouse gases. This article has made an effort to study the use of LNG as fuel for vehicles such as Buses and Trucks. The main objective of this research work is (i) to explore the use of LNG as fuel for Buses and Trucks. (i) Operational viability (iii) Economic viability (iv) Safety and Security aspects. The article concludes that using LNG as fuel for vehicles such as Buses and Trucks will significantly reduce the emission of Greenhouse gases and thereby minimize the destruction of the environment.