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D Line (Los Angeles Metro)

subway line in Los Angeles, operated by LACMTA

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 17, 2026
Entity authorityQ3916689 ↗
Source-derived summary

The D Line (formerly a branch of the Red Line from 1993–2006 and independently as the Purple Line from 2006–2020) is a fully underground rapid transit line in Los Angeles, California, running for 9 miles (14 km) between Beverly Hills and Downtown Los Angeles. It is the shortest of six lines of the Los Angeles Metro Rail system, operated by Los Angeles Metro.

The D Line is one of the city's two fully underground lines (along with the B Line). The two lines share tracks between Koreatown and Downtown Los Angeles. As of 2019, the combined B and D lines averaged 133,413 boardings per weekday.

In 2020, Metro renamed all of its lines using letters and colors, with the Purple Line becoming the D Line (retaining the purple color in its service bullet) and the Red Line becoming the B Line.

Construction has been underway since 2014 for a major extension of the line. The three-station, 3.9-mile (6.3 km) Section 1 opened on May 8, 2026, while sections 2 and 3 to downtown Beverly Hills, Century City, and Westwood, both expected to open in 2027, will add four new stations and 5.2 miles (8.4 km) of track to the line.

Service description

Route description

The D Line is a 9-mile (14 km) line that begins at Wilshire/La Cienega station in Beverly Hills. The line continues east for 5 miles (8.0 km) to Wilshire/Vermont station, where the line merges with the B Line.

Editorial summary

Begin with the source’s own compact description: “D Line (Los Angeles Metro)” is subway line in Los Angeles, operated by LACMTA. The dossier treats that line as a proposition to test through Line, Angeles and Metro, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1993, 2006, 2020, 2019—that can be checked directly. The linked authority record independently contributes the date 2006. For this dossier, Line, Angeles and Metro is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “subway line in Los Angeles, operated by LACMTA” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q3916689. 2 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1993, 2006, 2020 and 2019.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “D Line (Los Angeles Metro)”, its source revision and the description used here.
  2. Expand the search: follow D Line (Los Angeles Metro) primary sources, D Line (Los Angeles Metro) archive and Line research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “D Line (Los Angeles Metro)”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
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Source & attribution

This entry incorporates text from “D Line (Los Angeles Metro)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.