Denver (Colorado) - 600,000 inh (metropolitan area: 2 million). Denver's metropolitan area is now served by two urban rail systems, a classic American light rail system (with high-floor cars using low-floor platforms) in the south and west and a suburban rail system predominantly in the northern parts:

(~94 km in 2019) operating 6 lines* which share certain sections:

[D] Downtown Loop - Littleton/Mineral
[E] Union Station -RidgeGate Parkway
[H] Downtown Loop - Florida
[L] 30th & Downing - Downtown Loop
[R] Peoria - RidgeGate Parkway
[W] Union Station - Jefferson County Gov. Ctr./Golden

History:
08 Oct 1994: Central corridor- 8.5 km - 30th St/Downing - I-25/Broadway
14 July 2000: Southwest corridor - 13.9 km - I-25/Broadway - Littleton/Mineral
05 Apr 2002: Central Platte Valley spur - 2.9 km - 10th Osage - Union Station
17 Nov 2006: SouthEast Light Rail - 31 km - I-25/Broadway - Lincoln / Nine Mile
28 April 2013: West Rail Corridor - 19.2 km - Auraria West Campus - Jefferson County Gov. Center/Golden
24 Feb 2017: "R Line" - Peoria - Nine Mile - 16.8 km (and south to Lincoln on existing routes)
14 Jan 2018: "L Line" introduced replacing D between downtown and 30th St/Downing
17 May 2019: Lincoln Station - RidgeGate Parkway (3.7 km)

*08 Jan 2023: [C] Union Station - Littleton/Mineral and [F] Downtown Loop - RidgeGate Parkway discontinued

22 April 2016: A Line (University of Colorado A Line) > Union Station - Denver Airport, 36.8 km; every 15 min
25 July 2016: B Line > Union Station - Westminster, 9.9 km (not stopping at 41st & Fox and Pecos Jctn); every 30 min peak, 60 min off-peak; to be extended north to Boulder Junction and Longmont
26 Apr 2019: G Line > Union Station - Wheat Ridge & Ward, 17.6 km; every 15 min
21 Sept 2020: N Line > Union Station - Eastlake-124th, 21 km (mostly single-track)

Regional Transport District (Official Website)

Denver Transit Partners (Commuter Rail construction)

Denver Light Rail at Wikipedia

Denver Light Rail at Calvin Henry-Cotnam's website

Denver Light Rail at NYC Subway.org

Platte Valley Trolley (Heritage Streetcar Line)

Read your webmaster's personal impressions of the Denver Light Rail system (July 2012)

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