UPDATE: 10:20 a.m. Making matters worse, now train service has stopped completely between Shady Grove and Twinbrook because Pepco wires are hanging over the roadway, according to Metro. The agency has requested shuttle buses to carry passengers past the gap, but riders should expect more delays.

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10 a.m.: Red Line riders found even more to dislike than a glazed over commute Tuesday morning.

Three events at two separate locations waylaid the commutes for riders coming in from the Shady Grove branch of the line. And no, they weren't all related to the slick layer of ice that messed up everyone else's commutes.

First there was an issue with an insulator on the tracks near the Tenleytown stop about 7:10 a.m., Metro spokesman Reggie Woodruff said. Smoke had entered the station and fire crews were dispatched. Trains were forced to share a single track.

Then a train was stopped for a sick customer at Twinbrook station a bit after 8 a.m., he said. The same train also had a door problem, Woodruff said, and all the riders had to be offloaded.

By 9 a.m., he said, normal service had resumed, though some residual delays remained.