Is ban on old diesel and petrol vehicles in Delhi NCR fair?

The Supreme Court has allowed an applicant to challenge the ban on older diesel and petrol vehicles in Delhi-NCR, which was imposed in 2015 to reduce pollution. The applicant argued that the ban should not be applied retrospectively, affecting those who purchased vehicles before the ban. Critics of the ban suggest alternatives such as the Vehicle Scrappage Policy or allowing well-maintained older vehicles to operate after inspection. The debate continues on whether banning old vehicles is the most effective way to combat pollution in Delhi.