(Photo: flickr/elvertbarnes)

I wrote about WMATA's growing train door problems not long ago but never imagined hearing about an incident like this. Earlier today the transit agency acknowledged that a Metro train door opened while the railcar was moving:

.@TUTAZGAMD the Red Line car pictured did have an uncommanded door opening. No injuries, train offloaded shortly after. ^BA

— @wmata (@wmata) May 15, 2012

Disturbing. Unsuck D.C. Metro first flagged a photo tweeted of the incident early this morning, and The Examiner reports additional details, that we're talking about a 1000-series Red Line train between Van Ness and Tenleytown from this morning.

Here's a question though. If Metro does have to pull any of its 1000-series fleet, what would that do to WMATA's Rush+ service scheduled to start on June 18? WMATA has 290 1000-series railcars, which comprise about a quarter of Metro's total fleet.