Photo by Matt' Johnson on Flickr.

On January 1st, trains that carry millions of commuters might stop running. That’s because in 2008, Congress set a deadline for trains to have a certain type of safety feature by the end of this year, and a lot of train operators won’t be able to meet it.

The law Congress passed requires that any railroad line hosting regular inter-city or commuter rail service, along with freight lines that carry certain types of hazardous materials, be outfitted with “Positive Train Control” (PTC) by December 31, 2015. For much of the nation, that isn’t going to happen, and that means those lines will stop operating on January 1st.

Realistically, the only way that freight and passenger service in the United States can avoid being crippled on January 1st is if Congress extends the PTC deadline. If it doesn’t, commuters in many cities, including Washington and Baltimore, could see train service disappear.

Here’s how PTC works

Positive Train Control is a system of controls built into the track, locomotives, and radio antennas that will stop train crashes in a variety of circumstances. Had PTC been in place at Frankford Junction earlier this year, it would have almost certainly prevented the Amtrak crash in Philadelphia this May.

PTC will automatically stop a train before it runs a red signal, takes a curve too fast, or enters a work zone at an unsafe speed. In order for it to work, the track has to be outfitted with equipment that can tell the train where it is at any given time, radios that will communicate data to the train, and equipment in the cab that interprets those signals and slows or stops the train as necessary.

Congress decided to mandate PTC in the wake of a deadly head-on crash between a Metrolink train and a freight train in Los Angeles. But this was an unfunded mandate. Following it is costing public agencies like MARC and VRE and railroads like CSX and Amtrak billions of dollars.

The fact that the deadline is approaching and PTC is not yet in place across much of the network is not for lack of trying.

Six years may seem like a long time, but to design, install, test, and activate this complex system over thousands of miles of track was and is a herculean task. And it was made more difficult by miscues, especially from the Federal Communications Commission, which dragged its feet allocating the radio frequencies necessary for the system to work.

Some of our region’s rail providers will meet the deadline, but others won’t

With the deadline to have PTC operational just three months away, railroads are scrambling to figure out what is going to happen. Most of the big freight railroads say they won’t meet the deadline. They’re all actively working on PTC, but there’s just not enough time to complete the work before December 31.

On the other hand, some railroads are ready, or will be. In Los Angeles, Metrolink, the regional commuter rail network, already activated PTC on the tracks it owns, but sections controlled by other railroads remain unfinished. Amtrak says most of its Northeast Corridor will also be ready by December 31. But Amtrak trains on other lines won’t be so lucky.

That’s because on much of Amtrak’s network, the passenger trains run on tracks owned by other railroads, who haven’t gotten their equipment in place. Amtrak has been able to get the equipment in place because it owns most of the Northeast Corridor.

Unfortunately, the New York MTA actually owns the corridor between New Rochelle and New Haven, so PTC won’t be in place on its section by the end of the year. But between New York and Washington, trains should still be able to operate.

That’s some good news. It means that MARC service on the Penn Line shouldn’t be disrupted.

On MARC’s other lines and on VRE, the story isn’t the same. In their cases, CSX and Norfolk Southern don’t have their networks ready and won’t by the deadline.

Chicago’s Metra, one of the largest commuter rail operators in the country, has already begun alerting their riders that unless the deadline is extended, service will stop after December 31.

The shutdown of commuter and inter-city passenger service, along with many freight shipments, could have a huge impact on many regions and the nation as a whole. In the Washington region, thousands of commuters ride in to the city on commuter trains. That number is much higher in other cities.

Without commuter trains, these riders will have little choice but to travel other ways, which will likely increase congestion, pollution, and motor vehicle crashes. And for businesses waiting on shipments stopped because PTC hasn’t been turned on, jobs and productivity will be at risk.

At this point, only Congress can keep trains running

Only Congress can fix this. So far, it hasn’t shown much inclination to get this (or anything else) done.

House Republicans introduced a bill to extend the deadline three years. However, in the Senate, some Democrats are trying to use it as leverage.

California Senator Barbara Boxer says that unless House Republicans pass a transportation reauthorization, the Senate won’t pass the PTC extension bill.

PTC installation won’t be complete on most of the tracks that are required to have it by December 31. Without Congressional action, much of the nation’s rail network will shut down as 2016 dawns.

That’s an unacceptable outcome, but it doesn’t mean a polarized and gridlocked Congress will actually manage to stave off the crisis.

Matt Johnson has lived in the Washington area since 2007. He has a Master’s in Planning from the University of Maryland and a BS in Public Policy from Georgia Tech. He lives in Dupont Circle. He’s a member of the American Institute of Certified Planners, and is an employee of the Montgomery County Department of Transportation. His views are his own and do not represent those of his employer.