Bath & North East Somertset Council

Bath Breathes 2021 - CAZ Options

Clean Air Zone options

To reduce levels of NO2 to acceptable National and European limits by 2021, we’re proposing a Clean Air Charging Zone (CAZ) in the centre of Bath, charging drivers of higher-emission vehicles to drive in the zone.

No decisions have been made but we’re looking at the feasibility - including effects on health and the local economy - of the following options:

  • Three classes of Clean Air Charging Zones (Class B, Class C or Class D - as defined in the Government's Clean Air Zone Framework)
  • A range of other measures designed to sit alongside a CAZ to encourage greener modes of travel, and lessen the impact of a charging zone on residents, businesses and the economy

These shortlisted options were drawn from an assessment of more than 60 ideas to improve air quality, put forward by the public during a consultation last year.

The results of technical assessment has indicated that these three CAZ options (along with other measures to encourage greener travel) are the only options capable of delivering improvements by 2021. 

Note: The Council does not set the criteria for CAZ classes or the mandatory exemptions listed below. These are in line with the Government’s Clean Air Zone Framework.

The options

Class B CAZ

Higher-emission buses, coaches, private hires, taxis and heavy goods vehicles (HGVs) will all be charged when driving through the zone.

Class C CAZ

Higher-emission vehicles (as class B) plus higher-emission light goods vans (LGVs) will all be charged when driving through the zone.

Class D CAZ

All higher emission vehicles (as class B and C), plus higher-emission cars, will be charged when driving through the zone.

Exemptions in all classes

In line with Government guidelines, the following vehicles will be exempt from charges in each of the CAZ classes:

  • Petrol vehicles with Euro 4 (or newer) emissions rating, manufactured from approx. 2006 
  • Diesel vehicles with Euro 6 emissions rating, manufactured from approx. 2015
  • Fully electric and hydrogen fuel cell vehicles
  • Vehicles within the disabled passenger tax class

View the proposed CAZ map/boundary.

Will your vehicle be exempt?

You can check your car's emissions rating/standard (i.e. Euro 3, 4, 5, 6) using an online vehicle checker such as HPI, but we recommend that you refer to your vehicle manual or contact the retailer/manufacturer to confirm. 

What about other exemptions?

We are considering other exemptions and discounts as part of our public engagement, but these can't be decided until further technical assessment and modelling is complete. This includes consideration of emergency vehicles, community transport, blue badge holders and motorbikes.

What might the charges be?

A decision on charges and hours of operation will be reached after further technical assessment and public engagement.

Please note that any revenue from CAZ charges will be used to run the scheme. Any extra may be used to support greener modes of travel, depending on Government guidelines and decisions.

What other measures are being proposed?

Alongside the charging element, each package will include non-charging measures designed to encourage people to use greener modes of travel and lessen the impact of a CAZ.

These measures may include:

  • Sunset provision for owners of Euro 5 diesel vehicles, giving more time to review options
  • Reduced cost of residents’ parking permits for lower-emission vehicles
  • Improved public transport facilities, such as bus priority, better bus stops and more real-time information
  • Better provision for walkers and cyclists
  • A review of taxi licensing policy, considering how low-emission vehicles can be encouraged
  • Improved use of roadside variable message signs (on parking availability, events, travel times etc.)

When will a decision be reached?

A decision on the final package of measures must be reached by December 2018, and we expect a CAZ to be in place in Bath by 2020 (as per our legal obligation).

Please note that many of the details surrounding the options cannot be worked out until we have engaged thoroughly with the public, and we’ve fully assessed the impacts of each of the options on health, residents and the economy.

Please review the options and get involved/share your views.

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