Evening commuters have been plagued with delays across multiple MBTA subway and commuter rail lines, according to the T’s website.

As of 4 p.m., the Newbury/Rockport and Haverhill Lines were expecting 10- to 20-minute delays because of mechanical failures. The Needham Line was showing delays of up to 45 minutes because of slippery rails, caused by leaves that fall and cling onto the tracks.

A disabled train on the Forest Hills-bound side of the Back Bay/South End station was reported at 4:54 p.m., causing 10- to 15-minute delays, the MBTA’s website said.

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Earlier issues on the Red Line seem to be haunting service tonight. As of 5 p.m., southbound travelers were facing 10- to 15-minute delays because of a signal problem.

At midday, a broken rail at South Station caused the suspension of Red Line service for 22 minutes.

This morning, there was a disabled train at Shawmut station and yesterday, a train with a door problem became disabled at Ashmont station, causing delays, said MBTA spokesman Joe Pesaturo.

“In the grand scheme of things, these are minor delays,” MBTA spokesman Josh Robin said. “They’re mostly minor issues.”

Commuter rail travelers from South Station can derive some comfort knowing that during rush hour tomorrow, the new mobile ticketing app, mTicket, will become available to passengers.