In some embodiments, techniques comprise receiving route data that includes information relating to a stop, at a portable device that is personal to a passenger on a public conveyance; determining a destination, wherein the destination is related to the stop; determining a current location of the portable device; determining, based at least in part on the current location, that the portable device has nearly reached the destination, wherein determining that the portable device has nearly reached the destination includes determining that the stop is the next stop relative to the current location; and responsive to determining that the portable device has nearly reached the destination, providing an alert at the portable device.