The Centre has notified the Bharat Stage (BS)-VI emission standards for two-wheelers and four-wheelers from April 2020 across the country.

With this, the government has decided to skip the BS-V emission standards and move directly to BS-VI from the BS-IV norms currently being followed in various cities.

What are Bharat stage emission standards?
Bharat stage emission standards are emission standards instituted by the Government of India to regulate the output of air pollutants from internal combustion engine equipment, including motor vehicles.The Bharat Stage norms are based on EU norms to regulate pollution. 

Present Status of BS norms
BS-IV emission standards were introduced for 13 major cities in April, 2010. At Present, BS-IV norms are applicable in 30 major cities. BS-IV norms are expected to come into force nation-wide by March 31, 2017.

Resistance by Industry: 
Two major industries are resisting direct introduction of BS-VI norms:

1.    Oil refineries will need to invest substantially to upgrade the refining process. The shift from BS-IV to BS-VI demands approximately Rs. 50,000 crore – Rs. 80,000 crore from oil refineries. 
2.    Automobile industries will also be required to make high investments to produce vehicles with lower emission levels.


Also read: Bharat Stage NormsBHARAT STAGE-VI NORMSBS-VI emission norms for vehicles: So near and yet so far, here is whyAdvancing BS-VI emission norms Why has Maruti decided to stop making diesel cars?