I used to commute about 4 days a week in a city where no one really knew how to deal with bikes on the road. But the traffic was so light everywhere that it was never a real problem. Now I'm in a very dense city where there's a ton of stuff always going on on the roads, and I was spinning the wheels on my new Bianchi San Jose. Sunday is a good day to cruise around and learn the roads a bit, since traffic to work is considerably lighter. It's only a couple of miles, but boy does it feel like a lot more.
Anyhow, I was coming home and I decided to cross some rail tracks at an intersection that kind of curves gradually to the road. The tracks follow the road, and my front wheel got lodged into the rail and I thought I was going down! I am thankful that the wheel somehow popped out, I stayed upright, and there were no cars following close behind me at the time. But I learned a lesson I had forgotten about crossing rails -- orthogonality!
This did nothing to ease my apprehension of whether or not I should be commuting in these insanely busy streets.