About Low Emission Zones

About Lezs

Low Emission Zones (LEZs) are designed to improve air quality and were introduced across Aberdeen, Dundee, Edinburgh and Glasgow on 31 May 2022.

Planning continues at a national and local authority level.

Local grace periods now apply until enforcement begins.

  • In Glasgow, the LEZ already applies to buses. For other vehicle types, enforcement will start on 1 June 2023 (1 June 2024 for residents within the zone)
  • Dundee will start enforcement on 30 May 2024
  • Aberdeen will start enforcement on 1 June 2024
  • Edinburgh will start enforcement on 1 June 2024

The Scottish Government will continue to develop support and funding to help people and businesses meet LEZ requirements.

What are Low Emission Zones?

Low Emission Zones set an environmental limit on certain city roads, restricting access for the most polluting vehicles to improve air quality. This helps protect public health within our cities, making them more attractive places in which to live, work and to visit.

Vehicles that do not meet the emission standards set for a Low Emission Zone will not be able to drive within the zone. A penalty charge will be payable by the vehicle’s registered keeper when a non-compliant vehicle enters the LEZ.

Low Emission Zones were first introduced in Sweden in 1996 and there are now over 250 Low Emission Zones across 15 European countries, either planned or in operation.

They help protect public health by improving air quality, although the results depend on a range of factors such as size of the Low Emission Zone, the scope of vehicles covered by the LEZ, accurate traffic data and local weather conditions.

LEZs focus on improving air quality by reducing concentrations of the harmful pollutants Nitrogen Dioxide (NO2) and Particulate Matter (PM). They contribute towards meeting the emission reduction targets set out in Part 1 of the Climate Change (Scotland) Act 2009.

Whilst reducing Carbon Dioxide (CO2) emissions is important to help address climate change, to improve air quality we need to focus specifically on NO2 and PM pollutants. This is why LEZ vehicle emission standards (Euro categories) are driven by criteria that focus upon these specific gases.

The geographic extent, scope, timescales for implementation of Scotland’s Low Emission Zones in Aberdeen, Dundee, Edinburgh and Glasgow were determined by each local authority. The local authority will also be responsible for enforcement. For further information please look at the relevant local page of this website.

Why do we need Low Emission Zones?

Scotland’s air quality is generally good, but several pollution hotspots remain – these are predominantly caused by road transport.

Hotspots are found in urban, city locations where polluted air can affect everyone, especially the most vulnerable – the very young, the elderly and those with pre-existing health conditions.

Low Emission Zones can help reduce pollution from vehicle emissions, tackling both poor air quality and climate change.

What are the benefits of Low Emission Zones?


  • help to protect public health by improving air quality, as well as delivering various health, environmental and economic benefits.
  • cleaner air can have health benefits for everyone, especially for old and very young people and for those with existing heart and lung conditions.
  • in 2010, the UK Government’s Department of Health’s Expert Advisory Committee, the Committee on the Medical Effects of Air Pollution (COMEAP), estimated that poor air quality shortens average life expectancy in Scotland by three to four months (compared to six to seven in England and Wales). Vulnerable groups are disproportionately affected (Health Protection Scotland, 2014).

Further information can be found at: environment.gov.scot/our-environment/air/air-quality-and-health


  • can help reduce pollution from vehicle emissions.
  • help to accelerate the uptake of lower emission vehicles – and cleaner vehicles. Also benefit all areas the vehicles travel through – not just the Low Emission Zone.
  • encourage people to consider using more public transport and active travel methods instead of driving.


  • can help improve air quality and protect public health within towns and cities. This makes them more attractive places to live, work and to visit.