The mayor of London, England, Sadiq Khan, could ban all cars from entering the city on prescribed days of the week in a bid improve air quality, reports Autocar.

During a press event held February 19, the sitting mayor said “nothing’s off the table” in terms of what options he might implement to cut air pollution.

“I’m using all the tools I’ve got,” said Khan.

“We’re being innovative but the government’s got to do much, much more.”

London already has a congestion charge of £11.50 ($18.90 CAD) which drivers must pay for passage to downtown quarters of the city—a measure enacted to cut down on traffic.

Should a total vehicle ban be approved, it would likely start off on weekends so as to improve air quality without severely limiting access to Britain’s financial hub.