Bristol could become the UK’s first city to introduce a ban on diesel vehicles to boost air quality.
Under proposals by Bristol City Council, diesel vehicles will be prohibited from entering a central area of the city between 7am and 3pm every day.
A wider charging zone for commercial vehicles such as buses, taxis, vans and lorries that do not meet certain emissions standards is part of the measures.
There is also a plan to launch a car scrappage scheme to help diesel car owners buy an alternative vehicle.
Concerns over emissions of nitrogen oxides have grown since Volkswagen was found in September 2015 to have cheated air pollution tests for 11 million diesel vehicles worldwide, including 1.2 million in the UK.
Mayor of Bristol Marvin Rees said: “These ambitious plans demonstrate our commitment to tackling air pollution so we meet legal limits within the shortest time, without disproportionally affecting citizens on lower incomes which would happen with a blanket approach to charging vehicles.
“Protecting the most vulnerable people from pollution is central to these plans and we have ensured that all impacts have been carefully considered.
“If approved, mitigation measures will support those most affected, especially those living in the most deprived communities.”
The council’s cabinet is being asked to approve the Clean Air Zone proposal at a meeting on November 5.
If the plan is passed, the council would then work on developing the scheme with the Joint Air Quality Unit established by the Department for Environment, Food and Rural Affairs and the Department for Transport.
Data published by the Society of Motor Manufacturers and Traders shows that during the first nine months of the year diesels held about 26% of the new car market, compared with approximately 32% during the same period in 2018.