Environmental pollution is another threat to life. Everyone is affected by polluted air be it driver, children, old age people, or mechanics. Pollution norms are decided by air quality we breathe they are called i.e. Bharat stage 4 and 6
BS 4 was introduce in 2017 and BS6 will be from 2020….no BS-5 because we are already late. Point to be noted here is Government does not tell how it is done… individual manufacturer has to decide it by developing suitable technology.