Well, I was at the open house of the Worcester Model Railroaders, and as I was interested in joining, one member let me operate his sound equipped set of Providence & Worcester U-boats. I was having a blast, as this was my first expirience with sound equipped diesels, and I was passing through Framingham when I noticed an Amtrak train backing out onto the main in front of me. I stopped to avoid a wreck. Then, despite a working signal system (which I later found out was ignored by most of the members) I was rear ended by a BN coal train. The caboose and last two cars of my train ended up in a ditch along the ROW, and the lead 3 SD70MACs of the coal train derailed as well. Turns out the other engineer had been chatting with a visitor and wasn't paying attention to either the signals nor the track ahead. No harm done, we rerailed our trains and continued to run them.
The worst wreck on my home layout involved a heavy manifest and manned helpers, and it actually happened very recently.. I was operating a 24 car train (I counted later, and it stands as the record of longest train operated on the WRS by one engineer) with 3 units up front and two ni back. I had a UT4 in each hand and was controlling both the head engines as well as the rear end helpers. y train had made it around the layout once, and I was just passing through the yard when my friend arrived and wanted to run too.
His layout isn't known for slow speed control, so he's not used to the slow speed characteristics of my operating tendencies. That was a problem with the rear end helpers, where you had to go the same speed as the head end locos. I didn't realize this at the time, however, and assigned him to the rear end helpers. We had barely made it out of the yard, when in the town formerly known as West Concord, he accelerated off the yard shoo-fly track (the yard was being rebuilt, and there was a temporary track built during the reconstruction) and knocked the whole train over on the outside of the curve.
I explained to him about the slow speed capabilities of the throttles and locomotives, and we set off again.We had no more incidents until we reached the curve in Dooley at the foot of the pass, where a few cars tipped on the tight curve due to over caution on the part of the rear helpers. I noticed though, and slowed the head end locos to keep the train from stringlining.
Our train was really working hard to make it up the 4% grade, and wheels on the lighter locomotives (a Bachmann GP35 and GP30 set on the rear, which have since been retired) were starting to slip. The locomotives up front (a Spectrum C40-8W, an Atlas U23B, and an Atlas SDP35) were easily able to make the grade. When we reached the curved summit, the drag from the slipping rear helpers and the rest of the train caused the whole shebang to stringline on the curve!
I've taken some steps to prevent this from happening again, however. The Bachmann locos have been retired, and replacement locomotives include Atlas and Proto 2000 units which won't have weight problems. I am also converting all my rolling stock to metal wheels, which should elimanate a lot of drag. Also, it provides an added side effect in that I no longer have enough rolling stock in service to require helpers!