Green Car Congress

FEBRUARY 27, 2023

A new briefing paper from Imperial College London estimates that in 2021, 52% of all small particle pollution from road transport came from tires and brakes. Six million tonnes of tire wear particles (TWP) are released globally each year, and in London alone, 2.6

Pollution 243

Pollution Transportation London Environment 243

Green Car Congress

DECEMBER 6, 2017

Exposure to air pollution on city streets is enough to counter the beneficial health effects of exercise in adults over 60, according to new research led by Imperial College London and Duke University. Our research suggests that we might advise older adults to walk in green spaces, away from built-up areas and pollution from traffic.

London 150

London Pollution Environment Exhaust 150

Green Car Congress

APRIL 27, 2011

The London Congestion Charging Scheme (CCS)—which charged for travel into central London and reduced traffic volume ( earlier post )—has shown little evidence that it improved air quality as well, according to Part I of a new study published by the Health Effects Institute (HEI). µg/m 3. in PM 10.

London 299

London Charging Pollution Diesel 299

Green Car Congress

AUGUST 9, 2012

A scatter plot of CO, as a tracer for pollution, versus CO 2 , as a tracer for the amount of combustion, for 2002 and 2010. The magnitude of the drop in VOC levels was surprising, even to researchers who expected some kind of decrease resulting from California’s longtime efforts to control vehicle pollution. ppbv/ppmv to 10.7

Los Angeles 285

Los Angeles Gasoline Ozone 2002 285

Green Car Congress

MAY 24, 2016

The team used high-precision measurement equipment based at Royal Holloway College in Egham, but also found similar declines in even the most traffic-populated regions of London, including Marylebone Road, show. CO is representative of many pollutants, and London of many northern European cities. Lowry et al. Click to enlarge.

Gasoline 150

Gasoline Emissions 2003 London 150

Green Car Congress

OCTOBER 21, 2016

A new study by researchers from Imperial College London(ICL) of 39 new Euro 6 diesel passenger cars has found “ huge variability ” in the on-road NO x emissions of Euro 6 diesel passenger cars, with results ranging from 1 to 22 times the type approval limit. Comparison of urban and motorway trip average NO x emissions (note: y axis varies).

Diesel 150

Diesel Emissions Pollution London 150

Green Car Congress

SEPTEMBER 7, 2009

They calculated emissions for ten cities (or metropolitan regions), which vary in population from 432,000 to 9,519,000; comparisons are in per capita terms. London has the highest emissions for air transportation at 3.12 t e CO 2 /cap., with New York City also high. The relatively high emissions for Geneva (1.72 t e CO2/cap.)

Emissions 199

Emissions Global Gas Los Angeles 199