Trains cannot deviate from the ‘track’.
The engineer has very little to do, compared to the driver of an automobile.
Pilots of airliners have no locked in path, like a train does, yet pilots rarely look out the window while flying.
This whole thing is being so erroneously explained by the media, and officials, that I have to wonder what really happened.
Trains don’t ‘go’ and ‘stop’ like automobiles, and even if there was such a thing as a ‘red light’ (as described in the articles so far), by the time the engineer ‘saw’ it, there would be absolutely nothing he could do to stop the train.
A cars ‘stopping’ distance is measured in feet, a train’s stopping distance is measured in miles.
Anyone who has ever had model trains and tracks, or experience in real trains, knows this whole story stinks.
You need to read up on the specifics.
Airliners fly very controlled flightpaths and pilots should be routinely looking outside.