* Delhi - The study says: Average NOx emissions of heavy-duty vehicles was less than half the average emissions from cars
--- A study conducted by the International Council on Clean Transportation has revealed, diesel cars produce 10 times more nitrogen oxides (NOx) than trucks. The study was carried out in cities in the European Union and was released in December last year... The study says the average NOx emissions of heavy-duty vehicles was 210 mg/km, less than half the average emissions from cars (480-560 mg/km) in independent testing and Member State testing... Buses and trucks, though, have bigger engines and burn more diesel per kilometre. This means that cars produce around 10 times more toxins than trucks when NOx per kilometre is calculated... The study states that on-road emissions were below the Euro VI engine type-approval limits... The study has serious implications for India, where the number of diesel cars has grown over the years... According to the study, in 2014, the percentage of diesel vehicle sales was 52 per cent of total vehicles sales. While fuel and vehicles in Europe are of a superior Euro VI standard, fuel quality in India is still Bharat Stage III and IV — equivalent to Euro III and IV. Even if some luxury cars have a Euro VI engine, it will pollute more because fuel is still of a poorer quality...
(Photo: The study has serious implications for India, where the number of diesel cars has grown over the years) -- New Delhi, India - The Indian Express, by Mallica Joshi - January 16, 2017
* Delhi - Pollution dips this winter in. Favourable weather, fewer trucks helped
--- The period between October and January saw better air quality this year as compared to the last, as per analysis of data made available by the National Air Quality Index (NAQI). Favourable weather conditions, a 20 per cent reduction in the number of trucks entering Delhi, and emergency pollution-control measures could be behind the reduction, experts say... According to the municipal corporation toll operator, since the imposition of a higher environment compensation charge on trucks, and a ban on trucks only passing through Delhi, was imposed in late 2015, the number of trucks entering the capital has dropped to 20 per cent... Ajay Aggarwal, an operator, said the number of trucks entering Delhi fell by another 10 per cent after demonetisation. The Indian Express analysed data of the R K Puram station for October-January 2015-16 and October-January 2016-17... There were more severely polluted days between October and January 2015-16. In November 2015, air quality was “severely polluted” in 46 per cent of all days that the NAQI recorded. In 2016, this figure was 38 per cent, despite a steep rise in pollution after Diwali last year.
December 2015 saw 25 per cent severely polluted days as opposed to 16 per cent in December 2016...
(PTI Photo - A family dresses up warmly to withstand the cold on a wintry morning in New Delhi. According to the data, October was the only month where 2015 was less polluted than 2016) -- New Delhi, India - The Indian Express, by Mallica Joshi - January 14, 2017Labels: air pollution studies, pollution
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