Jeff,
Complacency is something that seems to happen no matter what the danger whether it be fast moving automobiles, trains, even severe thunderstorms and tornados. People seem to feel that if it didn't happen to them it's never going to happen and they develop a cavalier attitude, almost an arrogance because nothing is going to happen to them, ever. I saw this out west while storm chasing over the past several years. There would be a very high precipitation (HP) supercell thunderstorm heading their way. The storm will, produce high winds, severely huge hail, dangerous lightning, and even tornados. The storm sirens will be blaring loudly and the people will be out and about like nothing's going to happen. Storm chasers will do this too as they gather around to watch a tornado barreling down at them. They'll even get into harm's way to get that spectacular picture. While out train watching many years ago, I saw a group of fans climb up on a signal mast to take pictures from up there. How dumb is that? There wasn't anything special regarding this particular train other then it being a bit longer than normal. Why risk your life for a lousy photograph?
As I said, people think, or rather don't think when they are in the midst of doing their own thing. I saw the same with my own group while we were up in Nebraska on the South Dakota border this May. We were following some storms up in the Sand Hills area along US 18 which follows the BNSF former CB&Q main line. There were numerous coal trains coming along at about 60 mph in both directions on the double-tracked main line. This is one of the awesome parts of storm chasing! Anyway, the group thought it was nifty to climb up on the tracks and take pictures. I told them not to because the line is active and the trains haul a-- pretty fast here. The tour leader made a snarky comment to me and I stayed off the tracks. I warned them that they'd be caught though by the BNSF police because the line is patrolled.
I no sooner got the words out when a BNSF highrailer pulls up on the highway below and a woman gets out and yells "Get off the tracks! Someone was killed here six months ago! If you don't get off the tracks, I will have you arrested for trespassing!" A fellow storm chaser, and rail fan, and I climbed down the service road and spoke with her. She was quite upset and it was obvious why. She was afraid someone would get wiped along the tracks. The other person killed was found 3 miles away smushed along the ROW! Bill and I explained to her who we were and what we were doing, and we went up and spoke to the tour leader. When he saw us speaking with this lady, he came down and ordered everyone off the tracks.
We can say that it all boils down to common sense or the lack thereof and in many cases being selfish and not thinking.
John