A Clean Air Zone is a new mechanism proposed by the government to help cities tackle air pollution. It is a defined geographical area which requires polluting vehicle owners to pay a charge on entry to or movement within it. The charge is based on vehicle Euro standards. The aim is to accelerate the improvement in emissions of the vehicle fleet.

Charges would not affect every vehicle, just those that do not comply with levels set by government (see questions 2 & 3 for further information). Further information on the levels set by government can be found in the Clean Air Zone Framework, which sets out principles that should be followed when setting up a CAZ in England.

A CAZ is being considered in Bristol as part of a package of measures aiming to reduce air pollution to legal limits in the shortest time possible.

A decision has not been made to charge vehicles driving in Bristol. The feasibility study for Bristol’s Clean Air Plan recommends several options that can help improve air quality in Bristol to meet legal limits. Some of these options involve Clean Air Zones of varying geographies and classes. These options will be developed further over the rest of 2018, with plenty of opportunities for the public and stakeholders to provide input. The government guidance for the study requires that we use a CAZ as a benchmark option.