Question

What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi?

Answer 1

Because of the PIL that was filed in the supreme court ,the govt was asked to take care of the pollution.So the govt took various steps like using CNG(Compressed Natural Gas),phasing out of old vehicles,various norms like norm3 which lowered the sulphur content in diesel to 350 ppm and in petrol to150 ppm and aromatic contents in both to 42 percent etc.
Due to these measures air pollution has been reduced to a high extent. 

Answer 2

Answer:

In a list of 41 cities, Delhi has been characterized as the fourth most polluted city of the world. The pollution of air in Delhi is added by burning of fossil fuels. Several measures haven been to improve the air quality in Delhi, they are:

Introduction of CNG (Compressed Natural Gas) – CNG is a clean fuel producing very little unburnt substances. The Supreme Court of India has ordered the use of CNG-powered vehicles that were introduced at the end of the year 2006 in order to reduce the pollution levels in Delhi.

• Use of old vehicles is discontinued

• Use of catalytic converters

• Use of Unleaded petrol

• Use of diesel and low-sulphur petrol

• Applying strict pollution-level norms for vehicles

• Vehicles of major Indian cities have been implemented with Bharat Stage I, similar to Euro II norms

Air quality of Delhi has shown improvement due to the introduction of CNG-powered vehicles leading to a considerable dip in the level of SO2 and CO2. But, the issue of suspended particulate matter (SPM) and respiratory suspended particulate matter (RSPM) still exists.