The above reduction in the emission is because of several initiatives taken by the MIAL, one such initiative was use of high efficiency vehicles, and these emit 11% to 15% less than the regular vehicle.CNG has 95% fewer tailpipe emissions as compared to petroleum products. The negative sign (-) shows a decrease where as a positive sign (+) shows an increase in the value. There was saving in emission of carbon by 10.73% in the year 2012-13, but again there was again an increase of 5.32% in 2013-14 as compared to the previous year. It is also important to note that emission due to diesel is more as compared to emission from petrol as use of diesel has been more as diesel fuel contains more energy per litre than petrol. Diesel fuel has no lead emissions of the regulated pollutants (carbon monoxide, hydrocarbons and nitrogen oxides), which are significantly lower than those from petrol cars without a catalyst are. Thus, it should be noted that the emissions from petrol are constant from 2012-13 to 2013-14. But disadvantage of diesel fuel is that the emission of nitrogen oxide and particulate matter is much more than petrol fuel. …show more content…
(These values are based on Gross calorific Value). It should be noted that due to use of CNG 20%-30% fewer green house gases are emitted. Therefore, if we see the data of 2012-13 and 2013-14, the percentage increase of use of CNG is