Delhi imposes three-day ban on trucks as megacity chokes on toxic annual winter smog
- Vehicles carrying food and other essentials were exempted, while authorities appealed to owners of diesel sports utility vehicles to leave their cars at home
Delhi authorities have imposed a three-day ban on trucks entering the world’s most polluted major city as its 20 million inhabitants wheezed in the toxic annual winter smog.
With levels of air pollution classed as “hazardous”, the restriction on the nearly 40,000 medium and heavy lorries that enter Delhi every day was imposed late on Thursday.
The transport ministry said that vehicles carrying food and other essentials were exempted, while appealing to private owners of diesel sports utility vehicles to leave their cars at home.
Delhi’s air quality typically worsens in winter, as clouds of smoke from farmers’ fires billow into the city and mix with industrial and traffic emissions to form a noxious cocktail.
On Wednesday night, inhabitants of the capital largely defied a court order and set off an immense barrage of smoke-spewing firecrackers to celebrate the major Hindu festival of Diwali, sending pollution levels soaring.
On Friday, levels of particulates 2.5 micrometers or less in diameter, the most harmful to human health, peaked at 845, according to the US embassy website that monitors air quality independently.
The “hazardous” figure is roughly 33 times the World Health Organisation safe limit of 25 and health experts advised people to stay indoors or use masks for protection.
Vehicles on Delhi roads generate roughly 20 per cent of these tiny particles, which can be absorbed into the bloodstream and are linked to chronic bronchitis, lung cancer and heart disease.
Authorities in previous years have rationed private car use and imposed shutdowns on industrial units and coal-fired power plants, as well as taxes on lorries to discourage them from using Delhi as a transit route.
Delhi was among 14 Indian cities that figured in a list of the 20 most polluted cities across the globe this year issued by the WHO.