Why San Ysidro, CA is no longer included for truck activity?
The port of San Ysidro was closed to commercial truck traffic in 1994. Despite, the closure of San Ysidro to commercial truck activity in 1994, the Census Bureau continued to report data for San Ysidro through 1996. In addition, between 1994 and 1996, the Census Bureau suppressed data for traffic through the port of Otay Mesa (port 2506). Truck traffic through Otay Mesa was credited both to San Ysidro (port 2504) and to the San Diego Customs District (port 25XX). Unfortunately, it is not possible to correct previous years’ data. Beginning in January 1997, all commercial truck traffic is credited to the port of Otay Mesa. Rail traffic is still credited to San Ysidro due its proximity to the physical rail network.
