BART passengers were forced to endure significant delays on Sunday due to planned maintenance and an unexpected equipment failure in the East Bay, the rapid transit system said.

The delays affected BART trains traveling toward the Berryessa station in San Jose, and toward the system’s stations in Richmond and Millbrae, BART said.

The delays affected passengers traveling on the Richmond line, also known as the Red Line.

“The delays were caused by planned vegetation management between Downtown Berkeley and El Cerrito Plaza and an equipment problem in North Berkeley,” BART stated.

The transit system said it was dealing with the difficulties in multiple ways:

— Trains are using one track between Richmond and MacArthur stations

— Millbrae and Berryessa riders from Richmond can take a shuttle bus and transfer at MacArthur for a train to San Francisco International Airport and the Berryessa station in San Jose.

— People traveling from Millbrae or Berryessa to Richmond are being obliged to transfer at the MacArthur station in Oakland to a Richmond train.

BART didn’t immediately disclose the nature of the equipment problem, according to the advisories the transit system issued Sunday.