Penn Line

The Penn Line is a MARC commuter rail line running from Union Station, Washington D.C. to Perryville, Maryland via Penn Station, Baltimore, Maryland on Amtrak's Northeast Corridor. It is MARC's busiest and only electric line. Currently the line is the fastest commuter rail line in the country, with trains running at speeds of up to . The service is operated under contract by Amtrak which supplies employees to operate trains, and maintains the right-of-way and MARC's electric locomotives and passenger cars. The line is administered by MARC, a service of the Maryland Transit Administration (MTA).