The affected train was eastbound Southwest Chief #4.
Unfortunately, the toll has risen to 4 deaths (one in the truck) and at least 150 injuries.
One report states that the train was traveling at 90 MPH at the time of the collision, at a crossing with only crossbucks.
Apparently, the crossing is on a steep embankment and had visibility issues and has been on a waiting list for upgrades for the last 3 years.
I firmly believe that every crossing that trains are going that fast through should have gates and lights, regardless of the amount of road traffic.
Matt