Best practices followed across the world for improvement of air quality includes:-
1) adoption of improved vehicular emissions norms
2) commissioning of an efficient public transport system
3) commissioning of effective inspection and maintenance system
4) phase out of older vehicles
5) proper siting of industries
6) enforcement of emission standards on industries and power plants
7) cleaner production using efficient and clean fuel based practices
8) adoption cleaner fuels in transport and domestic sector
9) adoption of renewable energy options.
10) improvement of fuel quality
11) proper construction, maintenance and cleaning of roads
12) EIA guidelines
13) less dependence on DG sets
Gasoline Lead Phase Out Programme- India
Source : CPCB