Due to the decreased source and stock of petrol, in transport sector, the source of alternative fuels is being developed and used as well. The characteristics of alternative fuels, their advantages and disadvantages are discussed bellow: ‘
(a) CNG (Compressed Natural Gas) is a mixer of hydrocarbon found underground in which there is 80-90% methyl gas. The highest benefit of CNG is that it produces very low pollution, comparing to petrol and diesel. In Delhi CNG is being used successfully in universal transport system. However to use CNG extensively, mass production in transport system has not been done so far due to the shortage of resources.
(b) Ultra low sulphur diesel is also an alternative fuel, which produces even low pollution comparing to CNG.
(c) Gasohol is another alternative fuel in which petrol is mixed in the alcohol obtained from sugarcane juice; using Gasohol, the increasing loss in petroleum in India and pollution can be checked. However a modern investigation made the remark that it is not very safe for the engine of the vehicles. Bio-diesel transport vehicles’ development has not taken place fully, biodiesel can be acquired from a plant called jotaropha; in future it can be proved to be very useful. Besides, motor-grade alcohol is also an important alternative fuel.