D Line (Los Angeles Metro)

D Line (Los Angeles Metro)
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Name	D Line
Type	Rapid transit
System	Los Angeles County Metropolitan Transportation Authority
Locale	Los Angeles, California
Start	Wilshire/Western station
End	Union Station
Stations	14
Owner	Los Angeles County Metropolitan Transportation Authority
Operator	Los Angeles County Metropolitan Transportation Authority
Character	Underground
Stock	CRRC HR4000
Linelength	9.9 mi (15.9 km)
Electrification	750 V DC third rail
Mapstate	collapsed

D Line (Los Angeles Metro)

The D Line is a heavy rail rapid transit line in Los Angeles County, California, forming a key component of the Los Angeles County Metropolitan Transportation Authority rail network. The line connects the dense commercial and cultural corridors of Wilshire Boulevard, Koreatown, Mid-Wilshire, Downtown Los Angeles, and the Civic Center with major hubs like Union Station. It operates entirely underground and interfaces with multiple regional rail, subway, and light rail services.

Route description

The route runs east–west beneath Wilshire Boulevard from Wilshire/Western station near the intersection of Western Avenue and Wilshire Boulevard through Koreatown, Mid-Wilshire, and the Wilshire Center to Hollywood-adjacent neighborhoods before turning northeast to serve Bunker Hill, the Financial District, and terminating at Union Station. Along the alignment the line passes near cultural institutions such as the Los Angeles County Museum of Art, La Brea Tar Pits, The Grammy Museum, and Walt Disney Concert Hall. Transfer points include connections to A Line at historic stations, B Line at 7th Street/Metro Center station, E Line at shared corridors, and regional services at Union Station including Metrolink, Amtrak, and Pacific Surfliner services.

History

Planning for heavy rail under Wilshire Boulevard dates to postwar transit studies influenced by projects in New York City, Chicago, and Bay Area Rapid Transit proposals. Initial construction phases were shaped by voter initiatives including Proposition A and later funding measures such as Measure R and Measure M. Early tunneling and station work intersected with opponents from local business groups and preservationists near sites like MacArthur Park and Los Angeles Memorial Coliseum. Key construction milestones included the opening of initial segments in the late 1990s and expansions completed in the 2000s, with federal support from the Federal Transit Administration and environmental reviews under the National Environmental Policy Act and California Environmental Quality Act. The line's original branding and numbering evolved alongside systemwide reorganizations managed by the Los Angeles County Metropolitan Transportation Authority and political leadership from the City of Los Angeles and County of Los Angeles executives.

Stations

Stations are fully underground and feature amenities influenced by designs seen at Châtelet–Les Halles, Centre Pompidou, and modernized platforms similar to Shinjuku Station. Notable stations include Wilshire/Western station, Wilshire/Normandie station, Wilshire/Vermont station with proximity to Los Angeles City College, Wilshire/La Brea station near the La Brea Tar Pits and Museum, Wilshire/Fairfax station adjacent to the Los Angeles County Museum of Art complex, Wilshire/Western station serving dense commercial corridors, and 7th Street/Metro Center station linking to the Financial District. Downtown stations provide direct access to Walt Disney Concert Hall, Broad Museum, Dorothy Chandler Pavilion, and Los Angeles State Historic Park. Each station integrates public art commissions by artists who have worked with institutions like the Los Angeles County Arts Commission and national programs such as the National Endowment for the Arts.

Operations and rolling stock

The line operates frequent all-day service with headways that vary by time of day, coordinated with dispatching centers modeled after control rooms at MTA New York City Transit and Transport for London. Rolling stock transitioned over time to modern units including the CRRC HR4000 fleet delivered to expand capacity and replace legacy cars. Trains are powered by 750 V DC third rail and use signaling systems compatible with communications-based train control principles employed on systems like Bay Area Rapid Transit and Washington Metro. Operations, maintenance, and safety protocols are overseen by the Los Angeles County Metropolitan Transportation Authority with maintenance facilities located near the line's western segment and shared yards that also service lines operated by the agency.

Ridership and performance

Ridership has reflected Los Angeles's broader transit trends, influenced by events such as the 2008 financial crisis, the COVID-19 pandemic, and major local events like the Academy Awards and Los Angeles Marathon. Peak weekday ridership serves commuters to the Financial District, cultural destination traffic to museums and theaters, and university-related flows. Performance metrics reported by the agency track on-time performance, mean distance between failures, and passenger crowding relative to standards used by agencies such as Federal Transit Administration and peer systems including Chicago Transit Authority and New York City Subway.

Future plans and expansions

Planned expansions and extensions funded through ballot measures like Measure M and local partnerships aim to extend the corridor westward and increase connections to Westwood, Century City, and the Los Angeles International Airport via proposed linkages with projects like the LAX Automated People Mover. Long-range plans coordinate with regional planning bodies such as Southern California Association of Governments and seek federal transit grants administered by the Federal Transit Administration and environmental approvals under National Environmental Policy Act and California Environmental Quality Act. Proposed service improvements include increased train frequency, procurement of additional CRRC HR4000 cars, station accessibility upgrades to comply with ADA standards, seismic retrofits informed by research from United States Geological Survey and partnerships with universities including University of California, Los Angeles and University of Southern California.

Category:Los Angeles Metro Rail lines