Edinburgh's Low Emission Zone has been rubber-stamped by councillors and will now go to Scottish Ministers for approval before taking effect from May 31.
A ban on the most polluting vehicles driving into the city centre will be introduced in a bid to improve air quality.
Diesel cars registered before September 2015 and petrol cars registered before January 2006 — as well as HGVs and buses that do not fall into the 'Euro 6' emissions standards category — will be prohibited from driving within the city centre boundary.