All Sounder trains operated by Sound Transit were delayed or halted Tuesday morning by a communication malfunction that affected railroads nationwide, officials said.
Sound Transit spokesman Scott Thomsen said the BNSF Fort Worth Dispatching Center in Texas "reported significant communication problems nationwide."
The disruption affected railroad signals and radios before it was fixed at around 10 a.m. BSNF spokesman Gus Melonas said the problem apparently was caused by a communications upgrade at the control center.
The problem initially affected all Sounder north and south line trains, but later it mostly affected Sounder south line trains.
Buses were sent to pick up passengers stranded on Sounder trains.
One passenger told KOMO News that he and some of his fellow commuters were stranded at the Auburn station for well over two hours. Most had been offloaded to buses by 9:30 a.m., but 10 to 20 percent of the passengers were still waiting.
At 10 a.m. Sound Transit sent a bulletin announcing that the communications center was back and running and that all trains were on the move, with the following delays:
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