SEPTA is getting 10 train cars Friday from the Maryland Area Regional Commuter Rail to bolster its Regional Rail service, which has been disrupted by ongoing repairs to its Silverliner IV fleet.

SEPTA officials said the MARC cars will be used "where needed" on the Regional Rail lines, and that reliability should "gradually improve," but repairs to the Silverliner cars have been delayed due to supply issues. The transit authority said this week that it will not meet a federally-mandated deadline to add thermal sensors to its Silverliner IV cars, because there is a shortage of wire needed to complete the repairs.

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Amtrak is transporting the MARC cars from Union Station in Washington to 30th Street Stat

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