Would you wait for the next bus if your battery was low?
Vitamin Water Offers USB Charging at Bus Stops : Read more
Vitamin Water Offers USB Charging at Bus Stops : Read more
Of course, the shelter just provides the USB port, so it's up to the person on-foot to bring his or her own USB cable. Mind you, users should always be careful about putting their plugs into unknown ports -- though the bus stop seems to be a fairly safe place to do it.