getLaneChangeState(string, int) -> (int, int)
        Return the lane change state for the vehicle

def getLaneChangeState(self, vehID, direction):
        """getLaneChangeState(string, int) -> (int, int)
        Return the lane change state for the vehicle
        """
        self._connection._beginMessage(
            tc.CMD_GET_VEHICLE_VARIABLE, tc.CMD_CHANGELANE, vehID, 1 + 4)
        self._connection._string += struct.pack("!Bi", tc.TYPE_INTEGER, direction)
        result = self._connection._checkResult(tc.CMD_GET_VEHICLE_VARIABLE, tc.CMD_CHANGELANE, vehID)
        return result.read("!iBiBi")[2::2]