Due to severe air pollution, Delhi government has taken step to curb the generated pollution from the vehicles. The odd-even scheme for vehicles that allows cars with only odd or only even number plates to ply, will make a comeback this month to combat air pollution. This comes as the air pollution in Delhi has reached ‘severe’ category. The scheme, AAP minister Gopal Rai said, will be implemented from November 13 to 20. This odd-even scheme will be implemented a day after Diwali, which is on November 12.