Sometimes experience is the best teacher.
A lesson I learned the hard way was to be extra careful when driving across railroad crossings.
I hadn't had my driver's license long and I was about to cross a set of tracks and looked away for some reason and didn't notice the crossing arm was down and the lights were flashing. I hit the lowered arm with my windshield wipers and windshield. I didn't realize what happened until I was across the tracks.
I just missed getting hit by a train. 
This was a while ago. I have had a ton of similar lessons along the way.
Does anyone have an experience they'd be willing to share?
