NEW DELHI: The Supreme Court on Friday said the odd-even scheme has not been very effective in dealing with pollution, and asked the Delhi government to explore other ways to tackle the crisis.Though the Delhi government claimed pollution was down by up to 15%, the Central Pollution Control Board, quoting from its findings during the last edition of the scheme two years ago, informed the bench that odd-even could at best reduce pollution by 3%. Senior advocate Mukul Rohatgi, appearing for the AAP government, said the impact of the scheme could not be ascertained on the basis of pollution data from this year and the previous year as pollutants entered Delhi due to stubble burning and remained here. The bench pulled up the city government and said: “Stubble burning is only for a few days. There will be a problem even after it has stopped. The situation will further deteriorate when there will be fog. Sixty per cent of the problem is because of your inaction. Something more than ‘odd-even’ is to be done. It appears that pollution has increased during the odd-even scheme,” the bench said. Terming the present scheme a halfway measure, the bench said it could not be effective till two- and three-wheelers are also rationed. The Delhi government said bringing all vehicles under the scheme would create chaos.“Odd-even is not substantially reducing pollution as it targets only cars… If you are serious then bring all vehicles within it. If you give no exemption then it may work. This scheme can be effective only if there is a good public transport system. In other countries, public transport is made free while enforcing odd-even,” the bench said.