San Diego and Imperial Valley Railroad
The San Diego and Imperial Valley Railroad (SD&IV) (reporting mark SDIY) is a class III railroad operating freight rail service in the San Diego area, providing service to customers in the region and moving railcars between the end of BNSF Railway in downtown San Diego and the Mexico–United States border in San Ysidro. It was established in October 1984 and is owned and operated by Genesee & Wyoming.
Source: Wikipedia — San Diego and Imperial Valley Railroad (CC BY-SA 4.0)