text: The CTP is one of the most aggressive air quality programs at any port complex in the world. The task force brought together diverse supply chain and community stakeholders to work together to find solutions that would accelerate the use of cleaner vehicles through various incentives and regulatory measures. The program began on October 1, 2008 with a ban on all trucks built before 1989. About 90 percent of all truck engines now meet the strict U.S. EPA 2007 emissions standards, which has resulted in a pollution reduction of nearly 80 percent since the program began in 2008.