Thanks for the helpful responses everyone. I took a screengrab of an aerial photo of the tracks on google earth. I was traveling from right to left on the road in this photo. I slipped a little on the first set of tracks and I was probably trying to turn slightly for the second set of tracks. Sounds like I was going too fast, perhaps turning while crossing tracks, and crossing them at a poor angle.

I always try to improve my angle when crossing railroad tracks to closer to 90 degrees, but I thought the danger I was avoiding was getting one of my wheels stuck in the rut between the steel track and the asphalt, so I figured as long as my angle was good enough to avoid that possibility, it was good enough. I never really thought about crossing at 90 degrees due to losing traction on the actual steel track itself - whoops! Sounds like I was being a bit dangerous and a bit of a bonehead, so I appreciate how tactfully y'all led me to realize the biggest contributor to the fall was a basic bike handling error. ;-)

Anyhow, thanks again for the helpful responses. I think I'll stick with what I have but just be a lot more careful riding home, which is when I have all the train track crossings. Maybe when my 25mms wear out I'll switch to 28mms that can run a lower tire pressure.


Best,
Stephen