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DENVER (KDVR) — RTD has canceled 32 A Line trips between Denver International Airport and Union Station Tuesday due to staffing issues.

According to RTD, the trains are required to have a second crew member on board, and “ongoing staffing challenges” are preventing that from happening.

Of the 32 canceled trips, 17 are from the airport to Union Station and 15 are from Union Station to the airport.

The canceled DIA to Union Station trips are:

  • 1
  • 11:12 am from Denver Airport Station to Union Station Track 1
  • 11:42 am from Denver Airport Station to Union Station Track 1
  • 12:12 pm from Denver Airport Station to Union Station Track 1
  • 12:42 pm from Denver Airport Station to Union Station Track 1
  • 1:12 pm from Denver Airport Station to Union Station Track 1
  • 1:42 pm from Denver Airport Station to Union Station Track 1
  • 2:12 pm from Denver Airport Station to Union Station Track 1
  • 2:42 pm from Denver Airport Station to Union Station Track 1
  • 3:12 pm from Denver Airport Station to Union Station Track 1
  • 3:42 pm from Denver Airport Station to Union Station Track 1
  • 4:12 pm from Denver Airport Station to Union Station Track 1
  • 4:42 pm from Denver Airport Station to Union Station Track 1
  • 5:12 pm from Denver Airport Station to Union Station Track
  • 15:42 pm from Denver Airport Station to Union Station Track 1
  • 6:12 pm from Denver Airport Station to Union Station Track 1
  • 6:42 pm from Denver Airport Station to Union Station Track 1
  • 7:12 pm from Denver Airport Station to Union Station Track 1.

The trips from Union Station to DIA are:

  • 11:15 am from Union Station Track 1 to Denver Airport Station
  • 11:45 am from Union Station Track 1 to Denver Airport Station
  • 12:15 pm from Union Station Track 1 to Denver Airport Station
  • 12:45 pm from Union Station Track 1 to Denver Airport Station
  • 1:15 pm from Union Station Track 1 to Denver Airport Station
  • 1:45 pm from Union Station Track 1 to Denver Airport Station
  • 2:15 pm from Union Station Track 1 to Denver Airport Station
  • 2:45 pm from Union Station Track 1 to Denver Airport Station
  • 3:15 pm from Union Station Track 1 to Denver Airport Station
  • 3:45 pm from Union Station Track 1 to Denver Airport Station
  • 4:15 pm from Union Station Track 1 to Denver Airport Station
  • 4:45 pm from Union Station Track 1 to Denver Airport Station
  • 5:15 pm from Union Station Track 1 to Denver Airport Station
  • 5:45 pm from Union Station Track 1 to Denver Airport Station
  • 6:15 pm from Union Station Track 1 to Denver Airport Station

RTD says there will still be trains running every 30 minutes, but this is half as often as the scheduled 15-minute intervals that usually run.

Editors note: This story has been updated after RTD issued a new list of cancellations and said the first list was incorrectly built.