Bristol

Why we need a Clean Air Zone

The Government set legal limits for pollution and we have to introduce a Clean Air Zone to ensure Bristol meets those limits within the shortest possible time. A major source of air pollution in cities is road traffic, particularly diesel engines.

Air pollution affects everyone in Bristol, especially:

  • children
  • older people
  • people with heart, breathing and underlying health conditions




Over 71% of vehicles in Bristol are already compliant and so only a minority of vehicles driving in the zone will be charged.

In the coming years, this percentage should increase even more as more people take advantage of the available financial support to switch to a cleaner vehicle or a different mode of transport.

Bristol's Clean Air Zone will be added to the government website once confirmed.

Our choice of Clean Air Zone is a Small CAZ (Clean Air Zone - Please refer to table) D.

It offers a balance between improving air quality and the need to support businesses as much as possible.

Types of Clean Air Zones

There are 4 types of Clean Air Zones, Class A to D.

Class Vehicle type
A Buses, coaches, taxis, private hire vehicles
B Buses, coaches, taxis, private hire vehicles, heavy goods vehicles
C Buses, coaches, taxis, private hire vehicles, heavy goods vehicles, vans, minibuses
D Buses, coaches, taxis, private hire vehicles, heavy goods vehicles, vans, minibuses, cars, the local authority has the option to include motorcycles