I was reading through the rules section of my upcoming tri (first time!) when I came upon this, "Common infractions include drafting, blocking and position foul on the bicycle."
I have a pretty good idea what drafting is from my swimming background. And blocking seems self-explanatory. But I have no idea what a position foul is. In swimming everyone stays put in their own lane (Except for one time in high school. That was hilarious for everyone except the poor freshman.) so you don't really have to worry about position.
I would hate to be disqualified or screw up someone else's race by doing something that is poor form out of ignorance. What is a position foul and are there any other bike race etiquette things I should be aware of?