The Bath Clean Air Zone (CAZ) was launched on March 15, 2021. The scheme was introduced with the aim of improving air quality by charging high-emission vehicles that enter the city centre.
What is the difference between CAZ, LEZ and ULEZ?
In most instances you will find that Clear Air Zones (CAZ) and Low Emission Zones (LEZ) are the same thing. In England the scheme is CAZ and in Scotland it is LEZ.
However, there is a difference between these and an Ultra Low Emission Zone (ULEZ) – which differs mainly in the strictness of emissions standards.
ULEZs usually have stricter emissions limits and cover all vehicle types, including private cars.
Whereas CAZ/LEZs might have more relaxed standards and specific targets – such as commercial vehicles only.