The Bill failed to complete its passage through Parliament before the end of the session. This means the Bill will make no further progress. A Bill to make provision about mitigating air pollution, including through the use of low emission zones; to prohibit vehicle idling; to restrict the approval and sale of vehicles with certain engine types; to require local authorities to undertake tree-planting programmes and to take steps to promote the use of electric propulsion systems in buses and taxis; and for connected purposes.