Indian Biogas Association has suggested enforcement of the odd-even rule for four wheelers in Delhi NCR to check air pollution and encourage people to shift to electric vehicles or those based on compressed biogas (CBG) or natural gas. Under the Graded Response Action Plan (GRAP) 4 (with air quality index of over 450) measures, odd/even rule for four wheelers is imposed. The Commission for Air Quality Management (CAQM) has already imposed GRAP 3 measures with the air quality remaining in the "severe" category. Taking with PTI in an interaction, Indian Biogas Association (IBA) Chairman Gaurav Kedia said, "We recommend implementing the Odd-Even Rule for Petrol and Diesel Vehicles in the coming months so that a good impact can be seen for the air pollution levels in Delhi, and subsidy on EVs and CNG/CBG vehicles, as this will compel the citizens to shift to greener fuel alternatives. The air pollution situation in Delhi NCR worsens every winter, with the seasonal air quality index ...