They don't like people parking thier bikes infront of stores and in the main area of town, so most towns have underground parking...it might only cost 100 yen but people still don't use it, and park wherever they like. Occasionally they'll come around and ticket, and then come back later and collect the bikes that have tickets on them...too bad for you if you're bike is collected, you have to go get it from the yard. It's very much like if your car gets towed.