Question

Do you think the optimisation of public transport will help in reducing air pollution? How?​

Answer 1

While air pollution originates from a variety of sources, tailpipe emissions from cars, trucks, and buses rank among the largest contributors. In a world where motor vehicles reign supreme and 96% of transport's energy use comes from fossil fuels, we are effectively meeting our mobility needs at the expense of our life expectancy.

Low and middle-income countries pay the highest price: as highlighted in this graph by the Sustainable Mobility for All initiative (SuM4All), countries with a relatively low GDP per capita tend to see higher concentrations of PM2.5, a type of particulate matter generated primarily by road traffic.