Funny you should post this.
DH and I just caught on Showtime last night a show called The Ride - a docu about Phil Keogan from The Amazing Race t.v. show (which we never watch) riding his bike across the country fro MS.
Excellent show - but Phil nearly had his adventure come to an end when he wiped out in the rain crossing RR trax (head down, didn't see them coming).
Rain is bad enough. RR tracks are a potential disaster. Extreme caution is always warranted.