Compressed Natural Gas Vehicles (CNG vehicles) are powered by natural gas that has been compressed to a high pressure. This fuel is stored in tanks and used to power internal combustion engines, similar to gasoline or diesel vehicles. CNG is considered a cleaner alternative, producing fewer emissions and pollutants compared to traditional fuels. CNG vehicles are often used in public transportation, such as buses and taxis, due to their environmental benefits and lower operating costs. Many governments encourage the use of CNG through incentives and infrastructure development, promoting a shift towards more sustainable transportation options.