Earlier today, we saw the latest in a series of crashes that have plagued Amtrak and other US passenger rail providers over the last few years. This is, first and foremost, a human tragedy; but it is also an urgent concern of public policy. While trains–and all public transit–are on a population level much safer than driving, there is no need to accept any casualties at all, ever. While others–primarily the NTSB–will provide a full analysis in the weeks and years ahead, this is my attempt to reckon with what we know about this incident as of the same evening. I had intended this to be a series of bullet points but WordPress doesn’t like the formatting, so I’ve bolded every topic heading.
Let’s keep in mind that the victims of this tragedy should be in our minds; I haven’t seen a casualty count since the morning, but we know there are fatalities and serious injuries. That shouldn’t have happened, and in addition to wishing their families comfort, this post is inspired by a sense that we–myself as a transportation professional and those who read this blog–should do all we can to prevent such things from happening.
Amtrak 501 was operating over–was, in fact, and somewhat remarkably, the very first revenue train over– the Point Defiance Bypass, a state/federal-funded project that moves passenger trains from a mudslide-prone, curvy waterfront route around Tacoma to a more direct, faster route.
While the tracks for the bypass have been in service, they have not carried passenger trains along their whole length until now. Trains have been running to test the line for months, but this was the first one to carry passengers.
As befits its purpose, the Point Defiance Bypass is mostly straight, easy 79-mph running, but the area where the train derailed is much trickier. Toward the southern end of the bypass, not far from rejoining the freight main at Nisqually Junction, the tracks flow into an S-curve with a bridge over I-5 in the middle.
Looking south, in the direction of train travel.
Going into the curve southbound, the speed limit drops from the standard track speed of 79 mph to 30 mph, as confirmed by an Amtrak employee timetable I’ve been sent.
According to one report, there should have been an indicator sign two miles before the speed restriction indicating the drop in speed; certainly, there was a sign indicating the 30 mph restriction immediately before the curve.
The train was probably going too fast. Amtrak’s train tracking system doesn’t report train speed or location completely continuously (at least not publicly) but in this case it appears to have pinged the train immediately before the crash, reporting a speed of 81.1 mph at a position just 1400 feet east of the crash site. The system isn’t 100% reliable, so don’t worry about the report that the train was going two mph above the speed limit (which wouldn’t have made a difference in any case). The same Seattle Times report quoted a motorist who said he was driving in the 60 mph range and the train was going faster. And the positioning of the crashed train–the lead locomotive taking a nearly straight route out of the curve, as if it didn’t follow the tracks at all–indicates a speeding train whose inertia carried it (or rather, part of it) forward. Remember, the train should have been going 30 mph going into that curve. There is no way for a passenger train to shed 50 mph in the space of 1400 feet.
If the reporting system data and eyewitness reports are at all accurate, this is pretty clearly a case of a train exceeding the speed it should have been operating at. Overspeed (as it is technically known) is, however, more a descriptor than an explanation; beyond that I strongly discourage speculation. There are too many causes to count: operator error; signal failure; equipment problems (the lead locomotive was a brand-new Siemens Charger); track problems (remember, this is new, or at least recently refreshed, infrastructure); or any number of other possibilities.
Though I discourage speculation about root causes, it’s impossible not to note the scary parallels between this crash and two other recent overspeed crashes, Amtrak 188 at Frankford Junction, Philadelphia in 2015 and Metro-North at Spuyten Duyvil in the Bronx in 2013.
Diagram of the Amtrak 188 crash at Frankford Junction. Source: http://www.businessinsider.com/here-everything-we-know-about-amtrak-188-train-wreck-in-philadelphia-2015-5
Metro-North crash at Spuyten Duyvil. Source: https://twitter.com/NTSB/status/407329136735027200/photo/1
Amtrak 188 entered a 50 mph curve at 106 mph; in a situation eerily similar to today’s the Metro-North train entered a 30 mph curve at 82 mph. We still don’t really know the root cause of the Frankford Junction crash, though most theories have centered around the engineer (who is suffering from amnesia from the accident) losing attention somehow, without his recollections it’s impossible to know for sure. At Spuyten Duyvil the engineer suffered from sleep apnea and was apparently asleep as the train went around the curve (the same issue has come up in several other, more minor commuter rail incidents recently, including at Hoboken and Atlantic Terminal). Whatever the cause, overspeed incidents are all too common on American railroads.
Discussions about these kinds of things always come back to Positive Train Control. Originally mandated by Congress after the 2008 Chatsworth crash—not an overspeed incident, for what it’s worth–PTC implementation was an unfunded mandate, has suffered extreme resistance from the railroad industry, and has been painfully slow. As at Frankford Junction and Spuyten Duyvil, PTC was not in operation on the Point Defiance Bypass today; as far as I can tell, it is intended for operational status later this year (as indeed it was at Frankford Junction…ouch). Yes, barring some kind of drastic equipment failure, PTC likely would have stopped this crash. But it’s worth noting that it’s not the only technology available to stop a speeding train headed into a slow zone; various forms of Automatic Train Stop have been able to do so for almost 100 years. So while the increasing series of crashes is absolutely making a cumulative case for cracking down on the rail industry’s PTC slowness, we should keep in mind that failures like this implicate not only the PTC mandate, but the entire safety culture of American railroading.
Let’s talk about safety culture. Jason Laughlin of the Philadelphia Inquirer just published a piece yesterday (literally not kidding) building off of the NTSB’s scathing assessment of Amtrak’s “safety culture,” stemming from yet another fatal crash, this one at Chester, PA in 2016. Let’s just take a moment to appreciate that the two maintenance-of-way workers killed in the crash and the train engineer involved all tested positive for drugs, and yet that was not found to be a necessary contributing factor to the crash. Similar assessments of commuter railroads have been, while perhaps not as bad, not encouraging either. American railroading has a lot of pathologies–a reactionary culture; toxic labor-management relations; an inability to accept innovation or new ideas–but few have the potential to affect riders as directly as the dysfunctional attitude that it sometimes seems everyone from the top down takes toward safety. It’s a problem that pervades both management and labor, and no one should escape the recriminations, when they come, unscathed. Alex Forrest has a good thread about the cultural contrasts between American and Japanese attitudes toward rail safety; but let’s just say the challenge of 21st century American railroading will be to change a culture where the idea that a train will go on the ground every so often is acceptable rather than unimaginable.
The train’s equipment–a new Siemens Charger locomotive and articulated, lightweight Talgo coaches–is fairly unusual by US standards, but there’s no indication it played any role in the crash. Here, you can see the Charger sitting on the freeway south of the bridge, the 12 Talgo coaches in various geometric arrangements across the crash site, and the trailing P42 (presumably included as insurance for the new locomotive) still sitting on the tracks.
Don’t freak out. Train crashes get a lot of attention because they’re unusual, visually spectacular, good media content, and a grand American tradition going back to the 19th century. That doesn’t mean they’re actually common. You’re still a lot safer on the train than in a car. I’m obviously mad at American railroad safety culture–and you should be too–but that shouldn’t get in the way of data-oriented reality, even in moments where it’s tempting. Because ultimately, this is all about getting our casualties from mobility down to precisely zero–and we have a lot more work to do on the car side than the transit side.
Featured Image source: https://www.seattletimes.com/seattle-news/photos-from-amtrak-train-derailment-near-olympia/