What measure do you suggest to control pollution from automobile exhausts?

Explanation

Measure to control pollution from automobile exhausts.
(i) Proper maintenance of automobiles along with use of lead free petrol or diesel. This has reduced the pollution level in Delhi.
(ii) Use of low sulphur petrol and diesel.
(iii) The entire fleet of public transport has been converted to run on CNG.
(iv) Catalytic converters, having expensive metals namely platinum-palladium and rhodium as the catalysts, are fitted into automobiles for reducing emission of poisonous gases.
(v) Old vehicles have been phased out of Delhi.
(vi) Stringent pollution level norms for vehicles have been laid down. All automobiles and fuel -petrol and diesel have to met the Euro III emission specifications.