The London low emission zone (LEZ) is a charging scheme that aims to reduce the pollution emissions of diesel-fuelled commercial vehicles in London. Vehicles whose emissions exceed pre-determined levels are charged to enter Greater London. Operation of the low emission zone started operating on 4 February 2008 followed by a phased introduction of an stricter emission standard up to 2012. The scheme is administered by Transport for London (TfL) for the Greater London Authority.

The scheme applies to diesel engine vehicles over 1.205 tonnes, which must be registered with TfL. The scheme does not affect cars or motorcycles. Owners of vehicles that do not meet these requirements must pay a fee of up to £200 with failure to pay resulting in a fine. A limited range of vehicles are exempted or able to obtain a discount from the charge. Payment of the LEZ charge is in addition to any congestion charge required.

Like the congestion charge, the zone is monitored using Automatic Number Plate Reading Cameras to record number plates. Vehicles entering or moving within the zone are checked against the records of the Driver and Vehicle Licensing Agency to enable TfL to pursue vehicles that have not paid. (Full article...)