If you hit the boundary marker on the app, it will zoom out and show the "in bounds" area in blue.
Here are the rules:
1) While renting, you can ride a bike anywhere
2) Temporarily lock the bike anywhere, even outside the boundaries (using the Hold Bike functionality)
3) End Rental Session when bike is in bounds
If you want to lock a bike outside the blue box, you will be charged a $25 fee for us to fetch it and bring it back.