Penn Line
A Penn Line train at Odenton station
Overview
Owner	Maryland Transit Administration
Locale	Washington, D.C., and Maryland suburbs east; Baltimore and suburbs northeast
Termini	Washington, D.C. Union Station Perryville, MD
Stations	13
Service
Type	Commuter rail
System	MARC Train
Train number(s)	400–499, 502–579, 610–698
Operator(s)	Amtrak (under contract)
Daily ridership	24,267[1]
History
Opened	1881
Technical
Line length	77 mi (124 km)
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	Overhead line, 12 kV 25 Hz AC
Operating speed	44 mph (71 km/h) (avg.) 125 mph (201 km/h) (top)
Route map Penn Line highlighted in red Show interactive map Wilmington/Newark Line to Temple University Amtrak Newark (proposed) DE MD Elkton (proposed) Perryville Susquehanna River Aberdeen Bush River Edgewood Gunpowder River Martin State Airport Back River Union Tunnel Penn Station B&P Tunnel West Baltimore Frederick Road closed 1984 Halethorpe Camden Line to Camden Station Patapsco River BWI Airport Odenton Bowie State Bowie Seabrook Lanham closed 1982 Capital Beltway closed New Carrollton Landover closed 1982 MD DC Anacostia River Camden Line Brunswick Line to Martinsburg or Frederick Union Station Virginia Railway Express Amtrak Show BSicon diagram map

The Penn Line is a MARC passenger rail service operating between Union Station in Washington, D.C., and Perryville, Maryland, along the far southern leg of the Northeast Corridor; most trains terminate at Baltimore's Penn Station. It is MARC's only electrified line. With trains operating at speeds of up to 125 miles per hour (201 km/h), it is the fastest commuter rail line in the United States.^[2] The service is operated by Amtrak under contract to the Maryland Transit Administration. MARC sets the schedules, owns most of the stations, and controls fares, while Amtrak owns and maintains the right-of-way, supplies employees to operate trains, and maintains the rolling stock. It is the busiest of MARC's three lines, with twice as many trains and ridership as the Brunswick and Camden lines combined.

The Penn Line is the successor to commuter services between Washington and Baltimore provided by the Pennsylvania Railroad (PRR), Penn Central, and Conrail dating back as early as 1881. Additionally, Amtrak operated a commuter service named the Chesapeake between 1978 and 1983.^[3]

In 1983, Maryland, along with a number of other Northeastern states, took control of its commuter railroads. Amtrak, which had acquired the right-of-way from Penn Central, took over operation of the former PRR commuter line, which was rebranded as AMDOT (Amtrak/Maryland Department of Transportation).^[4] The Chesapeake was discontinued later in 1983 due to low ridership and redundancy with AMDOT. A year later, all commuter service in Maryland was merged under the MARC brand.

With frequent MARC and Amtrak service, the Washington-Baltimore section of the Northeast Corridor is one of the busiest rail lines in the United States.

Rolling stock

Electric MARC HHP-8 at Odenton station.

The Penn Line uses diesel as well as electric locomotives for powering trains. Most electric and rush hour diesel trains are 6-8 cars long, and are primarily made up of Kawasaki bi-levels. During the day, shorter 4-6 car MultiLevels or single level diesel trains from the Brunswick and Camden lines are used on the Penn Line. For the spring and summer months, weekend Penn Line trains also include a single-level Bike Car that is specially equipped to accommodate bicyclists.^[5]

All trains are operated in push-pull configuration with the cab-car end towards Washington.

All of the stations from Washington Union Station up to Penn Station have high-level platforms (with the exception of West Baltimore), and all of the subsequent stations, up to Perryville, have low-level platforms.

Service

MARC runs 58 Penn Line trains during a normal weekday. A majority of these trains (39 each day) operate along a 39 mi (63 km) stretch between Union Station in Washington and Penn Station in Baltimore. An additional 5 trains originate/terminate between Union Station and Martin State Airport, while 11 trains run along the entire 77 mi (124 km) corridor between Union Station and Perryville. A single morning train and a single evening train run between Perryville and Penn Station, and a single early morning train runs from Martin State Airport to Penn Station.^[6] Unlike MARC's other two lines, the Penn Line operates all throughout the day and well into the night.

On December 7, 2013, the Penn Line also began offering limited weekend service.^[7] Penn Line weekend service consists of 9 round trips on Saturday and 6 round trips on Sunday—primarily between Penn Station and Union Station. Several trains extend service to Martin State Airport, and all trains skip Seabrook.^[5]

Beginning on December 13, 2014, a separate Bike Car was added to some weekend Penn Line trains.^[8] Bike Cars are reconditioned Sumitomo/Nippon Sharyo MARC IIA single-level commuter railcars. One side of each car's interior is lined with bicycle racks which are arranged to secure 23 full-sized, non-collapsible bicycles, and the other side provides seating for 40 passengers.^[9] The Bike Car program was expanded during 2015 to include all weekend trains.^[9] There is no extra charge for using the Bike Car, which is available on a first-come, first-served basis. Beginning in 2016, MARC began installing bike racks on its bi-level train cars and some of its single-level cars. Weekday service was intended to begin in summer 2018, however, this was delayed several times. Eventually, 35 Penn Line railcars had full-sized bicycle racks installed, and weekday use of the bike racks on the MARC Penn line officially began on January 21, 2019.^[10] These railcars are available on most weekday rush-hour Penn Line trains and on all weekend trains. As with the former Bike Cars, these services are first-come, first served with no additional charge, and the bicyclist must make sure to be able to access the platform of the station they desire.

Amtrak's Acela Express, Northeast Regional, and other long-distance trains share tracks along the whole of the Penn Line. Washington Union and Baltimore Penn are the second and eighth busiest Amtrak stations in the country, respectively. Amtrak connections are also available at Aberdeen, BWI Airport (Amtrak's 12th busiest station) and New Carrollton. MARC passengers with monthly and weekly tickets can ride select Amtrak Northeast Regional trains during the week only, as part of their cross-honoring agreement.^[6] Connections are also available to the Washington Metro's Orange Line at New Carrollton, Red Line at Washington Union Station, and, previously to the MTA Light Rail at Baltimore Penn Station on a single tracked branch although this branch no longer runs.^[6]

The MTA has plans to extend the Penn Line to Newark station in Delaware via a revived Elkton station to connect with the Wilmington/Newark Line of SEPTA, or even further north to 30th Street Station in Philadelphia. The PRR's commuter route had run as far north as Philadelphia until the early 1960s.

The MTA funds a local bus connection between Newark and Baltimore with a transfer at Elkton.^[11] In 2020, Representative Edward Osienski and Senator Stephanie Hansen cosponsored a resolution to the Delaware General Assembly that would add commuter rail service between Newark and Perryville, involving an extension of MARC service to connect with SEPTA at Newark and provide an alternate to Amtrak for Delaware residents wanting to travel to Baltimore and Washington, D.C. This resolution will be introduced into the Delaware General Assembly in 2021.^[12]

Longer-term plans include construction of new track and extending the line past Washington Union Station to L'Enfant Plaza station and into northern Virginia.^[11] The Purple Line light rail system, under construction as of 2022, will connect to all three MARC lines; the transfer to the Penn Line will be at New Carrollton.^[13]

Stations

The following stations are served by Penn Line trains; not all trains stop at all stations.

State	Town/City	Miles (km) from Union Station	Station	Connections
DC	Washington	0.0 mi (0 km)	Union Station	Amtrak: Acela, Capitol Limited, Cardinal, Carolinian, Crescent, Northeast Regional, Palmetto, Silver Meteor, Silver Star, Vermonter, Amtrak Thruway to Charlottesville, Virginia MARC: ■ Brunswick Line, ■ Camden Line VRE: ■ Fredericksburg Line, ■ Manassas Line Metrorail: Red Line DC Streetcar: H Street/Benning Road Line Metrobus, DC Circulator, MTA Maryland, Loudoun County Transit, OmniRide Intercity bus: Greyhound, Megabus, BoltBus, BestBus, Peter Pan, OurBus
MD	New Carrollton	8.7 mi (14 km)	New Carrollton	Amtrak: Northeast Regional, Vermonter Metrorail: Orange Line Metrobus, TheBus
	Seabrook	11 mi (17.7 km)	Seabrook
	Bowie	16.3 mi (26.2 km)	Bowie State
	Odenton	22.1 mi (35.5 km)	Odenton	Anne Arundel County Bus
	Hanover	29.4 mi (47.3 km)	BWI Airport	Amtrak: Acela, Crescent, Northeast Regional, Palmetto, Vermonter BWI Marshall Airport Shuttle to Baltimore/Washington International Airport MTA Maryland, UMBC Transit
	Halethorpe	32.4 mi (52.1 km)	Halethorpe	MTA Maryland, UMBC Transit
	Baltimore	37.2 mi (59.8 km)	West Baltimore	MTA Maryland
		40 mi (64.6 km)	Penn Station	Amtrak: Acela, Cardinal, Carolinian, Crescent, Northeast Regional, Palmetto, Silver Meteor, Silver Star, Vermonter Baltimore Light RailLink MTA Maryland, Charm City Circulator
	Middle River	51.7 mi (83.2 km)	Martin State Airport	Martin State Airport MTA Maryland
	Edgewood	60.6 mi (97.5 km)	Edgewood
	Aberdeen	70.2 mi (113 km)	Aberdeen	Amtrak: Northeast Regional Harford Transit
	Perryville	76.2 mi (122.6 km)	Perryville	Cecil Transit

References

External links

• MTA MARC Train