TRANSPORT for London (TfL) is continuing to clamp down on drivers who persistently evade Penalty Charge Notices (PCNs) issued for Ultra Low Emission Zone (ULEZ) contraventions. When there is no response over an extended period from a driver who has incurred a ULEZ charge, the enforcement process is triggered, which includes issuing warrants backed by the courts. Other alternative enforcement action TfL could take includes recovering earnings from an individual’s employer and making greater use of civil action to bolster the effectiveness of enforcement agents, including debt recovery actions in a County Court. TfL is also trialling changes to the style and format of its PCNs and Charge Certificates. “We want to make it clear that if you receive a penalty charge for driving in the zone, you should not ignore it.