The Long Island Rail Road said service was operating on or close to schedule shortly before 10 a.m. after a Monday morning rush hour of delays and cancellations related to signal trouble.

From about 5 a.m. to 8:30 a.m. trains on several branches were delayed or canceled because the signal issue in the West Side Yard restricted the LIRR's access to tracks, said spokesman Aaron Donovan.

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Donovan said the signal problem was discovered about 4:45 a.m., and without being able to access a number of tracks in the yard congestion-related delays and cancellations resulted.

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Branches affected included Babylon, Hempstead, Port Washington, Long Beach, West Hempstead, Ronkonkoma and Port Jefferson.

The service sent an email alert shortly before 6 a.m. that customers should anticipate delays and cancellations because of the signal issue.

Later, at shortly after 8 a.m., the service said to expect scattered westbound delays of 5 to 10 minutes.