BART said Thursday that a computer failure caused a major delay to the entire transit system early Thursday morning, but service resumed later in the morning as the agency recovered.
The system continued to experience delays of at least 20 minutes, according to the agency's latest update in the 9 a.m. hour. The source of the computer failure was under investigation, BART said.
BART said at about 5:45 a.m., it was recovering from the computer issue. An agency spokesperson said the specific cause and source of the issue had not yet been determined, "but we do have technicians working to resolve the problem."
The initial 4:59 a.m. news release read as follows: "There is a major delay systemwide due to a computer failure. Please seek alternate forms of transportation at this time. We apologize for the inconvenience."
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BART's major incident voicemail added the detail that the issue involves the dispatch system in its operations center.
BART is a heavy-rail public transit system that connects the San Francisco Peninsula with communities in the East Bay and South Bay.