In 2008, the Port of Los Angeles banned pre-1989 trucks followed by a progressive ban on all trucks that did not meet 2007 emission standards by 2012. In 2018, only model year 2014 or newer were allowed to sign up in the Port Drayage Truck Registry going forward. All drayage trucks entering port terminals must be signed up in the PDTR and comply with the California Air Resources Board’s Drayage Truck Regulation. These restrictions have helped reduce truck emissions at the port by 90%.