This section of the US Environmental Protection Agency provides links to information on air pollutants, its environmental and public health effects, programmes conducted to control the emissions of those pollutants and contribution to greenhouse gas emissions and climate change.
http://www.epa.gov/otaq/transport.htm
Transport section of the Optimum Population Trust website, displaying indepth the link between the increase in fossil fuel consumption, vehicles, aircraft and their emissions, and the world’s overpopulation. There is also a focus on the United Kingdom. Website also includes another section, titled
Links, featuring a list of sites about population, demographics, resources, and environment.
http://www.optimumpopulation.org/opt.more.traffic.html
This section of the website provides information, amongst others, legislation on motor vehicles emissions in the European Union (EU), new standards for transport fuels that will reduce air pollution, renewable fuels and the development of a sustainable transport system in the EU.
http://ec.europa.eu/environment/air/transport.htm#5