<Tr> <Td> </Td> <Td> This article needs to be updated . Please update this article to reflect recent events or newly available information . (March 2017) </Td> </Tr> <P> Bharat stage emission standards (BSES) are emission standards instituted by the Government of India to regulate the output of air pollutants from internal combustion engines and Spark - ignition engines equipment, including motor vehicles . The standards and the timeline for implementation are set by the Central Pollution Control Board under the Ministry of Environment & Forests and climate change . </P> <P> The standards, based on European regulations were first introduced in 2000 . Progressively stringent norms have been rolled out since then . All new vehicles manufactured after the implementation of the norms have to be compliant with the regulations . Since October 2010, Bharat Stage (BS) III norms have been enforced across the country . In 13 major cities, Bharat Stage IV emission norms have been in place since April 2010 and it has been enforced for entire country since April 2017 . In 2016, the Indian government announced that the country would skip the BS - V norms altogether and adopt BS - VI norms by 2020 . </P> <P> On November 15, 2017 The Petroleum Ministry of India in consultation with Public Oil Marketing Companies decided to bring forward the date of BS - VI grade auto fuels in NCT of Delhi with effect from April 1, 2018 instead of April 1, 2020 . In fact, Petroleum Ministry OMCs were asked to examine the possibility of introduction of BS - VI auto fuels in the whole of NCR area from April 1, 2019 . This huge step was taken due the heavy problem of air pollution faced by Delhi which became worse around this year . The decision was met with disarray by the automobile companies as they had planned the development according to roadmap for 2020 . </P>

When was bharat stage norms introduced in india