“ભારત સ્ટેજ ઉત્સર્જન ધોરણો” શું સૂચવે છે?

Bharat Stage (BS) Emission Standards are norms set by the Government of India to limit air pollutants from motor vehicles. They are modelled on European (Euro) norms; India moved from BS-IV directly to BS-VI in 2020.