That's similar to the system here in Helsinki. There are specific stations all over the city where you can collect/drop-off your bike. You get 30 minutes of f

That's similar to the system here in Helsinki. There are specific stations all over the city where you can collect/drop-off your bike. You get 30 minutes of free time each time you "checkout" a bike, and are charged extra if you go beyond that. People do seem to use the system sensibly, taking a bike to go somewhere. Doing their stuff, then taking a second bike home such that the don't keep the same one for >30 minutes to incur the extra (small) charges.