Clean Air Zone overview and operation

What is a Clean Air Zone?

Skyline of Jewellery Quarter

A Clean Air Zone (CAZ) is an area where targeted action is taken to improve air quality, in particular by discouraging the most polluting vehicles from entering the zone. No vehicle is banned in the zone, but those which do not have clean enough engines will have to pay a daily charge if they travel within the area.

The Government has said that Birmingham needs a Clean Air Zone and that we need to reduce levels of NO2 in the air to a maximum average of 40μg/m3 as soon as possible. Once we reach that target, we want to continue to lower the amount of NO2 and particulate matter in the air as far as we can.


Birmingham plans to introduce a Clean Air Zone covering all roads within the A4540 Middleway Ring Road (but not the Middleway itself) launching 2021.


It is expected that Birmingham’s Clean Air Zone will come into operation 2021.

It will operate 24 hours a day, 365 days a year.

The charges will be applied daily. A non-compliant vehicle driving in the Clean Air Zone will pay once for the day, then may drive in and out of the area without limit for the same fixed charge. A 'day' runs from midnight - midnight, not from 24 hours after you first enter the zone. So if you enter the zone at 11:50pm and exit at 12:10am then you will be charged for two days. 

Think about alternatives

If you don't wish to drive in the zone there are alternative ways to travel. Find out more information here.