Delhi pollution levels have once again tanked for the worse with AQI (Air Quality Index) dipping into the 'very poor' category on Monday. As a direct result of deteriorating pollution levels, the Centre’s air quality panel has imposed GRAP 3 (Graded Response Action Plan) in the city which spells out various restrictions and bans aimed to bring down pollutants.

While there is a complete ban on non-essential construction and demolition activities, motorists in the city too have to once again take note. Petrol-powered vehicles that do not meet the BS 4 norms are banned from entering the National Capital Region or NCR. NCR includes Delhi, Gurugram, Ghaziabad, Faridabad and Gautam Budh Nagar. Emissions from vehicles, especially those that are beyond a certain age limit, are found to be one of the key contributors to the overall air quality levels here.

Delhi's move for cleaner mobility

Delhi aspires to become the electric vehicle capital of the nation. Although compressed natural gas (CNG) vehicles are relatively prevalent on the roads, the presence of electric vehicles remains limited. Various subsidies and initiatives have been implemented to promote the adoption of electric vehicles, but these efforts have predominantly benefited electric two-wheelers. Additionally, the city boasts a significant number of electric three-wheelers, and by the end of July this year, the capital had deployed 1,970 electric buses.

While CNG vehicles are known to produce fewer pollutants, electric vehicles are regarded as true innovators in the transportation sector, as they operate with zero emissions. Historically, Delhi has trialed an Odd-Even traffic rationing system, which has exempted electric vehicles from its restrictions.

Are cars to blame for Delhi's pollution?

The ongoing discussion regarding the extent to which vehicles in Delhi contribute to the city's pollution persists. Despite Delhi having one of the highest vehicle densities in the nation, several peripheral roads have been established to redirect traffic not destined for the city itself.

Notably, a study conducted by the Centre for Science and Environment earlier this year revealed that local sources are the primary contributors to pollution levels in Delhi, including emissions from vehicles. Additional factors such as stubble burning in neighboring states, emissions from local industries, and prevailing weather conditions also play significant roles.

During the winter months, the Air Quality Index (AQI) in Delhi and surrounding areas often reaches its peak, typically falling within the 'poor' category. This period is characterized by PM2.5 levels ranging from 200 to 300. According to the World Health Organization, PM2.5 levels up to 100 are classified as moderate, while levels between 101 and 150 are considered 'unhealthy for sensitive groups.' Levels from 150 to 200 are categorized as 'unhealthy,' affecting the general population in varying degrees.

Read Also: As Pollution Levels Surge, Delhi Prohibits BS-III Petrol and BS-IV Diesel Cars

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