An engine breakdown during an overnight test of Bay Area Rapid Transit’s (BART) ‘Train of The Future’ caused a major hindrance on the transit system’s East Bay Lines on early Friday morning.

According to BART officials a problem developed with the train before 5 a.m. near or inside the Lake Merritt station.

Spokesperson Jim Allison said that the train was returning from a test run when a problem developed.

“It was a four-car train of new cars returning from testing overnight when it became disabled,” he told KPIX 5. “It’s been pushed to a pocket track near the Bay Fair station.”

Trains on the Fremont and Dublin-Pleasanton lines were forced to single track while the disabled train was towed to a maintenance facility.

Initially, East Bay commuters experienced inconvenience for about 20-30 minutes.

According to BART, sixty new cars were expected to hit the rails by the end of this year, with the full order of 755 expected by 2021. The Bay Area Transit is spending $2.5 billion to replace and expand its aging fleet of 664 cars.

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