The P2000 is an articulated light rail vehicle used on the Los Angeles Metro Rail system, manufactured by Siemens-Duewag. The P2000 trains were ordered to supplement the fleet of the C Line, then known as the Green Line. P2000 trains continue to operate on the C Line as of 2024, and are expected to operate for an additional 15 years following an overhaul program that began in 2020.

The Los Angeles Metro Rail is an urban rail transit system serving Los Angeles County, California in the United States. It consists of six lines: four light rail lines and two rapid transit lines, serving a total of 101 stations. It connects with the Metro Busway bus rapid transit system, the Metrolink commuter rail system, as well as several Amtrak lines. Metro Rail is owned and operated by the Los Angeles County Metropolitan Transportation Authority (Metro).