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  3. Learn about Clean Air Zone signage

Learn about Clean Air Zone signage

Use this page to find out more about what signs to look out for, different types of clean air zones and what to do if you have already passed signage.

Types of signs

Clean air zone signs help drivers identify when they are approaching, exiting or travelling within the zone.

Advanced warning signs

Warning signs give drivers advanced notice and are placed on roads approaching the zone boundary, where drivers can choose to take an alternative route.

Example Advanced Warning sign, stating Clean Air Zone ahead, 2 miles ahead, Charges apply, Pay online

Entry signs

These signs indicate to drivers where the zone starts and are positioned on the entrance of the boundary.

An example Clean Air Zone sign, with the Zone Class, council logo and 'Charges apply, pay online' on

Exit signs

Positioned on the zone boundary, these signs indicate to drivers that they are leaving the zone.

An example Clean Air Zone exit sign, with the cloud symbol struck through and the words: Zone ENDS, Charges apply, Pay online

Repeater signs

Situated within the zone to remind drivers they are travelling within the zone and there is camera enforcement.

An example Clean Air Zone repeater sign, with the Zone Class and a Speed Camera image

Classes of Clean Air Zones

There are four classes of clean air zones (Class A, B, C or D).

Each zone is marked with a white‑on‑green cloud symbol, and the letter inside the cloud shows which class applies. The classes determine which types of vehicles may be charged in the zone.

Bath operates a class C charging clean air zone which means charges may apply to vans, taxis, buses, coaches and HGVs that do not meet the minimum emission standards.

a white‑on‑green cloud symbol, with a letter inside the cloud (A-D) showing which class applies

The four classifications are outlined below.

Class A 

Charges may apply to:

  • Buses
  • Coaches
  • Taxis
  • Private hire vehicles

Class B 

Charges may apply to:

  • Buses
  • Coaches
  • Taxis
  • Private hire vehicles
  • Heavy goods vehicles

Class C 

Charges may apply to:

  • Buses
  • Coaches
  • Taxis
  • Private hire vehicles
  • Heavy goods vehicles
  • Vans
  • Minibuses

Class D 

Charges may apply to:

  • Buses
  • Coaches
  • Taxis
  • Private hire vehicles
  • Heavy goods vehicles
  • Vans
  • Minibuses
  • Cars

Local authorities also have the option to include motorcycles.

 

Driving in the zone

Check if charges apply to your vehicle and pay within 6 days of travel at GOV.UK.

Only use the official ‘Drive in a clean air zone’ payment system at GOV.UK. This system only accepts payment from non-compliant vehicles, ensuring compliant or exempt vehicles are not charged.

The zone operates as a self-declare system. You are responsible for declaring the date(s) you drove in the zone and ensuring you pay the charge to avoid a fine.

Only use GOV.UK to pay. Unofficial third-party payment websites may charge extra fees and result in a Penalty Charge Notice. This is because the unofficial sites may fail to pay the daily charge on your behalf.

If you need to pay a fine, visit our webpage.

To avoid paying charges in the future, consider if you can travel more sustainably into the city.