How we check our facts

Every amount, deadline, ground and tribunal on this site comes from an official source, and each page lists its sources and the date we last checked them.

Our sources, in order

1. The regulations on legislation.gov.uk: Road User Charging Schemes (Penalty Charges, Adjudication and Enforcement) (England) Regulations 2013 (SI 2013/1783); Road User Charging (Enforcement and Adjudication) (London) Regulations 2001 (SI 2001/2313); Low Emission Zones (Emission Standards, Exemptions and Enforcement) (Scotland) Regulations 2021 (SSI 2021/177).
2. GOV.UK pages, including the list of Clean Air Zones and the Dart Charge guide.
3. The scheme operator's own website: TfL, each council, merseyflow, TT2, Transport Scotland.
4. The Traffic Penalty Tribunal and London Tribunals.

What we leave out

If we cannot verify something from those sources, we leave it out and say so. For example, we describe Aberdeen's LEZ as the city centre and link to the council map, because we could not confirm a street-by-street boundary from the council's pages.

How often we re-check

We re-check the oldest pages every week, and check the official lists every month for new zones, new charges and changed rules. The build of this site fails if a page has not been checked for 120 days.

Found a mistake?

Email us at [email protected] with the page and the official source, and we will check and correct it.