I live within a few miles of a somewhat major yard, so we get everything imaginable rolling thru. Plus Amtrak. About the only thing I can't remember seeing is raw timber.
Because we're so close to the yard, the chances of getting stuck at a crossing are extremely high. And sometimes, the trains seem to creep into the yard. I don't know which is worse: Being stuck for 5-15 minutes for a dozen cars or less, or a train that blocks every crossing from 1st to 25th Avenue!