SAN FRANCISCO (KCBS) — Bay Area Rapid Transit trains were delayed during and past the morning commute Monday due to a computer glitch, according to the agency.

A BART spokesman said the system was back on time late in the morning, but that the aging trackside equipment exacerbated the problem.

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Spokesman Jim Allison said the trouble began at about 8 a.m. when the computer system started showing false readings on five or six different spots on the system. As a result, there were delays of 10 to 20 minutes at the height of the commute hour.

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“What we’re experiencing is what we call false occupancies. Sections of track that are reporting that they have a train in it when there’s actually no train there,” Allison said.

When that happens, trains have to go into manual mode and slow to 25 miles per hour through affected areas.

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Allison said the problem was most likely weather-related.