def rerouteTraveltime(self, personID):
        """rerouteTraveltime(string) -> None Reroutes a pedestrian (walking person).
        """
        self._connection._beginMessage(
            tc.CMD_SET_PERSON_VARIABLE, tc.CMD_REROUTE_TRAVELTIME, personID, 1 + 4)
        self._connection._string += struct.pack("!Bi", tc.TYPE_COMPOUND, 0)
        self._connection._sendExact()