California Code, Harbors and Navigation Code - HNC § 1740

(a) The Ports of Long Beach, Los Angeles, and Oakland operate in unique communities, environments, and markets that require infrastructure improvements and air pollution reduction measures tailored to the nature and degree of need in each port of each community.

(b) There is a need to mitigate the enormous burden imposed on the highway transportation system serving the Ports of Long Beach, Los Angeles, and Oakland by the overland movement of container cargo shipped to and from those ports.

(c) The operations at the ports, including the movement of locomotives, ships, and trucks that move cargo containers to and from the ports, cause air pollution that requires mitigation.  This pollution contributes to the thousands of premature deaths and billions of dollars of health costs each year attributable to goods movement pollution in California.