Good points, however, I'm going to default to driver fatigue and inattentiveness and disregarding signage and the rules of the road as significant factors - this coming from my own professional experience. If you've seen some of the things I've seen...
Going back to my OP, the person of interest
was using a cell phone - yet he didn't call 911, or his boss, or the local police but did take the time to hike a mile or so after abandoning his rig. That intersection (as I follow incidents like this one as part of my professional makeup) has Automatic Active Traffic Control Devices - lights and crossing gates - but the driver was long gone before the train arrived. The engineer could have been traveling at a lower speed IMHO, but I'm not one to criticize the NTSB (in this instance...). So, I'm in agreement that this intersection was pretty much covered. Deferring to the advice/sources by
@kdarling - I'd rather see the NTSB require all CDL holders use a "certified" device and make GPS units as those listed at the line kdarling provided be mandatory, with checks at weigh stations and random checks by company supervisors/dispatchers.
In addition to kdarling's cited source, each of the major cell phone carriers (including VZW/Sprint/ATTWS) have a business arm that provides inventory tracking services - which would supplement those GPS units (which have been available for years).
But idiots will still be idiots...
Almost $19M to "fix" it -
https://www.wsdot.wa.gov/projects/i5/skagitriverbridgereplacement/
Some of the things I've seen (and fixed...). Sigh.