The document discusses emission norms in India (Bharat Stage) and Europe (Euro standards). It provides a timeline of the various Bharat and Euro stages introduced over time to progressively reduce emissions. Key points include: - Bharat Stage IV norms were implemented across India by 2017 while many cities adopted them in 2010. - India will skip Bharat Stage V and adopt the more stringent Bharat Stage VI norms by 2020 to be on par with European standards. - Euro standards have also progressively tightened, from Euro 1 in 1992 to the current Euro 6 standard introduced in 2015. - While the emission limits are the same, there are some differences in testing procedures between Bharat and Euro