A Bill to require the Secretary of State to set, measure, enforce and report on air quality targets; to require that vehicle emissions targets and testing reflect on-road driving conditions; to make it an offence to remove permanently devices that reduce vehicle emissions; to provide powers for local authorities to establish low diesel emissions zones and pedestrian-only areas; to restrict the use of diesel vehicles in urban areas; to make provision about the promotion of electric and hydrogen powered vehicles and for the development of sustainable public, private and commercial transport by road, rail, air and sea; and for connected purposes.