E Line (Los Angeles Metro)

The E Line (formerly the Expo Line from 2012–2019) is a 21.9-mile (35.2 km) light rail line in Los Angeles County, California. It is one of the six lines of the Los Angeles Metro Rail system, operated by the Los Angeles County Metropolitan Transportation Authority (Metro). The E Line runs east-west and serves 29 stations between East Los Angeles and Santa Monica, interlining and sharing five stations with the A Line in Downtown Los Angeles. The line operates for 19 hours per day with headways of up to 8 minutes during peak hours. It is the second-busiest light rail line in the system, carrying more than 12 million total passengers in 2023.

The majority of the E Line’s western section from Downtown Los Angeles to Santa Monica follows the original right of way of the Los Angeles and Independence Railroad steam railroad, built in 1875. Regular train service ended in 1988, and Metro acquired the right of way in the 1990s. Formal studies to convert the corridor into light rail began in 2000, and construction began in 2006. The E Line from Downtown Los Angeles to Culver City opened in 2012 and was extended to Santa Monica in 2016. Originally named the Expo Line due to its route along Exposition Boulevard, the line was renamed the E Line in late 2019 while retaining the aqua-colored line and icons designating it for the Expo Line.

Following the completion of the Regional Connector Transit Project in June 2023, the E Line extended east to East Los Angeles using part of the L Line light rail line. The project connected the existing E Line to the L Line via a newly built tunnel through Downtown Los Angeles. With this change, L Line service ended and was replaced with the E Line from Little Tokyo/Arts District station to Atlantic station. The line's color designation changed to gold to reflect its expanded route and integration with the L Line tracks.