At first, the PIDs were a wondrous, novel luxury unknown to other American subway systems.
They were great unless the one you were staring at said the next train was 20 minutes away.
But as Metro has declined, so too have the PIDs.
The decline started last year. At first, they were just minutes off, needing recalibrating, Metro said. It's unclear if that ever happened.
Things got worse, and it soon seemed the PIDs began to have no connection to time whatsoever, making them useless.
But Metro wouldn't stop there. Now, the PIDs have no connection to space.
What's next? Track 9 3/4?
Here's a collection of pics from the past couple of days.
Via @jdb820 This picture (at Columbia Heights) is beyond the impossible! #wmata @unsuckdcmetro http://plixi.com/p/76720590
Via @ArkansasFred Get it together, WMATA. http://twitpic.com/3z1ytu
Via @rumpfshaker Yeah. The trains are NOT boarding. :p @unsuckdcmetro http://plixi.com/p/76767106
Via @irenerojas All aboard the invisible orange line! #wmata http://plixi.com/p/77014126
Via @Historian4Hire And this next metro message is even better http://yfrog.com/gy93czkj #wmata
Via @AnnapolisRob *Steve Buckhantz voice* NOOO! NOT POSSIBLE! http://yfrog.com/h72f8slj #wmata @unsuckdcmetro
Farragut North repairs to last into summer (WaPo)
Metro can't count bus ridership (Examiner)