stylistic:style_transfer, linguistic:voice_change, stylistic:tone
Rail

The Los Angeles County Metropolitan Transportation Authority also operate a subway and light rail system across Los Angeles and its county. The system is called Los Angeles Metro Rail and consists of the B and D subway lines, as well as the A, C, E, and K light rail lines. TAP cards are required for all Metro Rail trips. As of the third quarter of 2023, the city's subway system is the ninth busiest in the United States, and its light rail system is the country's second busiest. In 2022, the system had a ridership of 57,299,800, or about 189,200 per weekday, in the third quarter of 2023.

Since the opening of the first line, the A Line, in 1990, the system has been extended significantly, with more extensions currently in progress. Today, the system serves numerous areas across the county on 107.4 mi (172.8 km) of rail, including Long Beach, Pasadena, Santa Monica, Norwalk, El Segundo, North Hollywood, Inglewood, and Downtown Los Angeles. As of 2023, there are 101 stations in the Metro Rail system.

Los Angeles is also center of its county's commuter rail system, Metrolink, which links Los Angeles to Ventura, Orange, Riverside, San Bernardino, and San Diego Counties. The system consists of eight lines and 69 stations operating on 545.6 miles (878.1 kilometres) of track. Metrolink averages 42,600 trips per weekday, the busiest line being the San Bernardino Line. Apart from Metrolink, Los Angeles is also connected to other cities by intercity passenger trains from Amtrak on five different lines. One of the lines is the Pacific Surfliner route which operates multiple daily round trips between San Diego and San Luis Obispo, California through Union Station. It is Amtrak's busiest line outside the Northeast Corridor.

The main rail station in the city is Union Station which opened in 1939, and it is the largest passenger rail terminal in the Western United States. The station is a major regional train station for Amtrak, Metrolink and Metro Rail. The station is Amtrak's fifth busiest station, having 1.4 million Amtrak boardings and de-boardings in 2019. Union Station also offers access to Metro Bus, Greyhound, LAX FlyAway, and other buses from different agencies.