Which of the following state government has recently announced ban on government vehicles older than 15 years?

The Bihar government announced a ban on government vehicles older than 15 years due to increasing pollution in the state. In Bihar's capital Patna, all commercial vehicles were banned while pollution checks for vehicles have been made mandatory in the entire state. Patna was included among the top 10 polluted cities of India released recently, due to which this decision was taken by the state government.