What are the steps taken to control vehicular pollution

The following steps are taken:
(1). Establishment of Ambient Air Quality Monitoring throughout India
(2). Notification of Ambient Air Quality Standards under Environment (Protection) Act.
(3). Notification of vehicular emission norms for year 1990-91,1996, 1998, 2000, 2001
(4). Improving fuel quality by phasing out lead from gasoline, reducing diesel sulphur, reducing gasoline benzene, and etc.
(5). Introduction of alternate fuelled vehicles like CNG/LPG.
(6). Improvement of public transport system.
(7). Phasing out of grossly polluting commercial vehicles.Public awareness & campaigns.