OAKLAND (CBS SF) — BART central computer system encountered a glitch that brought major delays to the transit system Monday afternoon, but the problem was fixed and service has recovered ahead of the evening commute, according to a BART spokesman.

The @SFBARTalert Twitter account sent the message at 2:06 p.m.

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A system that deals with routing BART trains malfunctioned at 1:41 p.m., resulting in a cascading effect that slowed trains and brought delays of up to 15 minutes, BART spokesman Taylor Huckaby said.

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Among other problems, the digital signage at BART stations apparently began displaying incorrect information.

About 15 minutes later, it sent a second tweet that the system was recovering from the delays.

Computer technicians restarted the systems affected by the glitch at about 2:30 p.m. and the residual delays were ironed out as of 3 p.m., Huckaby said.