Sign? What sign?

This morning as I was riding on campus, a police officer stopped me and informed me of a BYU rule that you can't ride your bike in the 10-minute break between classes. He must have recognized my surprise as genuine because he only issued a warning. I asked him if there were any other bike rules on campus, and he said, "Well, your bike has to be registered." To which I quickly replied, "It is!" Then he went his way and I went mine.

After I arrived at work, I tried looking up rules for bicycles at BYU and couldn't find any except the ones I (now) already know: 1) only park your bike in a bike rack, 2) your bike must be registered (any city in Utah County will do), and 3) do not ride your bike in the 10-minute break between classes. Funny thing, though- all three of those rules were in separate places! You'd think they'd put all the bike rules on one page. How am I to know if there are other rules I'm breaking because I don't know about them?

One of the things I found said there were "signs all over campus" that explained about the don't-ride-your-bike-during-class-break rule. I haven't seen anything of the kind.

Sign? What sign?!