There are no barriers or toll booths. Cameras read vehicle number plates driven through the zone, which are checked against our database to see if they meet ULEZ emission standards.
Road signs are in place before the ULEZ starts at every entry point along the boundary and along key arterial approaches. They sit next to existing Congestion Charge signs.
The ULEZ operates 24 hours a day, every day of the year including weekends and public holidays. It covers the same area as the Congestion Charge. In 2021 the ULEZ boundary will be extended to create a single, larger zone bounded by the North and South Circular Roads.
Entry signs at every boundary point tell you when you're in the zone.
Advance information signs appear on major roads around 0.5 miles from the boundary.