Domestic transport accounts for 31% of all greenhouse gas emissions in Scotland – the largest of any sector. Vehicles are becoming cleaner, emitting fewer carbon emission equivalents (CO2e) per mile than they were previously.
Compared to other sources of pollution, transport pollution is particularly harmful because it pollutes the air with nitrogen dioxide (NO2) and particulate matter (particularly PM10 and 2.5). Air pollution in the UK is linked to 40,000 deaths a year (Royal College of Physicians, 2016).