In State v. DeMello, 300 Or 590, 716 P2d 732 (1986), this court held that a defendant charged with driving while suspended may not prevail on an affirmative defense based on his lack of notice of the suspension when the evidence revealed that the defendant received a pink slip informing him that the post office was holding a certified letter for him. The question in this case is which side has the burden of proving whether or not the defendant received a pink slip when an affirmative defense is raised. We agree with the trial court and the Court of Appeals that the burden is on the defendant.
The defendant was arrested for driving while suspended. At trial, the parties stipulated that the defendant was driving on a public highway while her license was suspended. The defendant testified that she did not know her license was suspended until she was arrested. The state’s evidence included the suspension letter in an envelope marked “unclaimed.” Neither side introduced evidence on whether the defendant received a pink slip.1
After a trial to the bench, the judge issued the following findings of fact:
“(1) There is no evidence that Defendant had actual knowledge of the suspension;
“(2) There was no evidence of a ‘refusal,’ simply of an ‘unclaimed’ notice;
“(3) The notice was returned by the Postal Service to [Motor Vehicles Division] as unclaimed;
“(4) There was no testimony concerning postal practices as to unclaimed mail;
“(5) There was no testimony concerning pink slips;
“(6) The notice was mailed to the correct address, the Defendant still to this day lives at that address;
“(7) The Defendant did not receive her copy of the actual suspension order since it was returned unclaimed to Salem;
“(8) The state proved both driving and a suspension in effect at the time of the citation.”
*614The trial judge concluded that the defendant “did not establish by a preponderance of the evidence that she did not receive the pink slip from the U.S. Post Office that someone was trying to deliver a registered letter,” and therefore, “[a]s a matter of law, Defendant did not meet the burden of the affirmative defense.” The defendant was found guilty of driving while suspended in violation of former ORS 811.175. The Court of Appeals held that evidence supported the trial court’s findings and upheld the verdict of the trial court. State v. Click, 87 Or App 272, 742 P2d 67 (1987). We affirm.
At the time of the defendant’s arrest, former ORS 811.1752 provided in relevant part:
“(1) A person commits the offense of driving while suspended or revoked or in violation of an occupational or probationary permit if the person does any of the following:
“(a) Drives a motor vehicle upon a highway during a period when the person’s driving privileges or right to apply for driving privileges have been suspended or revoked in this state by a court or by the division.”
Although driving while suspended is a strict liability offense, drivers who were not notified of the suspension may raise an affirmative defense under ORS 811.180. State v. Buttrey, 293 Or 575, 651 P2d 1075 (1982). The affirmative defense statute provided in relevant part:
“(1) In addition to other defenses provided by law, including but not limited to ORS 161.200 [choice of evils], it is an affirmative defense to ORS 811.175 that:
<<* * * * *
“(b) The defendant had not received notice of the defendant’s suspension or revocation or been informed of the suspension or revocation by a trial judge who ordered a *615suspension or revocation of the defendant’s driving privileges or right to apply.” Former ORS 811.180 (1985) .3
Service of notice must be accomplished by either personally serving the suspension notice on the driver, ORS 809.430(3)(b), or “mailing the notice by certified mail, restricted delivery, return receipt requested, to the person’s address as shown by division records,” ORS 809.430(3)(a).
In State v. DeMello, supra, we examined the role that a pink slip plays in the statutory scheme for providing notice to suspended drivers under former ORS 482.570.4 There, the defendant claimed that he did not receive actual notice of the suspension, but he did not dispute receiving a pink slip delivered in connection with the suspension letter. He argued that the state established his affirmative defense by introducing into evidence the certified letter of suspension on which the post office had stamped “unclaimed.” According to the defendant, the “unclaimed” notation demonstrated that he did not receive notice of the suspension and his burden of establishing the “no notice” affirmative defense was met.
The issue presented in DeMello was
“whether the state proves notice by showing that defendant received a pink slip notification that certified mail is waiting *616for him at the post office, and whether defendant’s affirmative defense fails if the evidence reveals that he received the pink slip even though no other evidence shows that he ever physically received the letter of suspension from the division.”
At the time relevant to the DeMello decision, the affirmative defense statute required the defendant to show that he “had not received notice of the defendant’s suspension or revocation as required by ORS 482.570.” Former ORS 487.560.5 We focused our analysis on what notice was required under former ORS 482.570.
A review of the statutory language and relevant legislative history revealed that “the legislature did not intend that the defendant need actually receive the suspension letter, open it and read it before notice was deemed satisfied.” State v. DeMello, supra, 300 Or at 596. All that the statute required was sending the suspension letter by certified mail, restricted delivery, return receipt requested to the address of record. Delivery of a pink slip, not just the delivery of the suspension letter, would result in full compliance with this requirement. When the defendant received a pink slip, he received the notice required by statute. Id. Therefore, the defendant’s affirmative defense failed. Id. at 600.
Seeking to square this case with DeMello, the state urges this court to take judicial notice of postal regulations requiring mail carriers to leave a pink slip when the addressee of a certified letter is unavailable to accept delivery.6 According to the state, by taking judicial notice, the provisions of OEC 311(l)(j), (m) and (q) would allow us to infer that postal officials delivered a pink slip to the defendant. This case *617would then be indistinguishable from DeMello because of the unrebutted inference that the defendant in this case received a pink slip. However, the prosecutor did not request the trial court to take judicial notice of postal practices and the trial court did not take judicial notice on its own motion. We decline to take judicial notice at this stage of the proceedings and therefore we must determine who had the burden of proving whether or not the defendant received a pink slip.
Language at page 600 of the DeMello opinion is particularly helpful in determining who has the burden on the pink slip issue. We reasoned that because the defendant must show that he did not receive the notice required by statute, and because a pink slip constitutes the notice required by statute, the affirmative defense “place[s] the burden on the defendant to prove that he did not receive notice of the certified mail.” State u. DeMello, supra, 300 Or at 600. Counsel has offered no reason to retreat from this analysis.
Instead of challenging the reasoning of DeMello or the application of DeMello to this case, the defendant relies on language in the DeMello opinion which could be interpreted as suggesting that proof, that the defendant received a pink slip is part of the state’s ORS 811.180(2) burden of disproving the affirmative defense. ORS 811.180(2)(a) provides:
“The affirmative defenses described in this section are not available to a defendant under the circumstances described in this subsection. Any of the evidence specified in this subsection may be offered in the prosecution’s case in chief. This subsection applies if any of the following circumstances exist:
“(a) The defendant refused to sign a receipt for the certified mail containing the notice of suspension or revocation.”
At page 599 of the DeMello opinion, we stated:
“We discern no significant legal difference between ‘refusing’ a letter from the division and ‘failing’ to claim a certified letter after being notified that the certified letter awaits pickup. The suspended driver cannot defeat the purpose of the statute by either ploy.”
According to the defendant, this passage means that failing to claim certified mail has the same legal effect as refusing delivery of the suspension letter, and therefore proof that the defendant failed to claim his suspension letter falls within the state’s burden of defeating the affirmative defense *618under ORS 811.180(2)(a). If proving that the defendant failed to claim the certified letter after receiving a pink slip is the state’s burden, then, under the defendant’s reasoning, part of that burden would be proving that the defendant received a pink slip.
Besides ignoring the holding of DeMello, the defendant reads the language of DeMello out of context. The quoted text is a comment on the legislature’s efforts to avoid the problems associated with placing the burden of notice on the state. The legislature shifted the burden to eliminate the problems caused by requiring the state to prove notice when so many suspension letters were being returned undelivered. When we stated that there is no significant difference between refusing the letter and failing to claim the letter, we were merely recognizing that letters are returned undelivered whether they are refused or unclaimed, and, for both situations, the legislature intended that the notice requirement would be satisfied even though the suspension letter was not actually delivered. Nothing in the opinion implies that the burden shifts to the state to prove that the defendant received a pink slip but failed to claim the letter. We hold that the burden properly rests with the defendant.7
Former ORS 811.180 required the defendant to show that she did not receive notice of the suspension to establish her affirmative defense.8 Under DeMello, a pink slip constitutes notice of the suspension. Therefore, we hold that the defendant must show she did not receive a pink slip as well as the suspension letter in order to prevail on her affirmative *619defense of lack of notice of the suspension. Because the defendant did not introduce any evidence that she did not receive a pink slip, she did not meet the burden of establishing her affirmative defense and her conviction must stand.
The decisions of the Court of Appeals and the trial court are affirmed.
A pink slip is a document left by the United States Postal Service as notice that the post office is holding a certified letter addressed to that postal service patron.
In 1987, the legislature amended the law of driving while suspended. Or Laws 1987, ch 730, §§ l-3a, 20. ORS 811.175 still establishes the elements of driving while suspended and these elements were not changed in 1987. Under most circumstances, however, driving while suspended is now a Class A traffic infraction, ORS 811.175(4). Driving while suspended is a crime only if the defendant violates ORS 811.175 and the defendant’s license was suspended or revoked for one of the reasons listed in ORS 811.182(3) and (4). When the defendant was arrested, driving while suspended was either a Class A misdemeanor or a Class C felony, depending on the reason for the suspension. Former ORS 811.175(4).
The affirmative defense provision of ORS 811.180 was amended slightly in 1987. As codified, ORS 811.180(1) now reads:
“In addition to other defenses provided by law, including but not limited to ORS 161.200, it is an affirmative defense to the offenses described in ORS 811.175 and that:
Corresponding language in the 1987 Oregon Laws reads:
“(1) * * * it is an affirmative defense to the offenses described in ORS 811.175 and section 3 of this 1987 Act that: * * Or Laws 1987, ch 730, § 20 (emphasis added).
Section 3 of the 1987 Act defining criminal driving while suspended is codified at ORS 811.182. It appears that the current codification of ORS 811.180(1) inadvertently omits reference to “ORS 811.182” between the words “and” and “that” in the last line of the subsection.
In 1983, the legislature amended the motor vehicle code and renumbered its provisions. Or Laws 1983, ch 338. The notice provision of former ORS 482.570 is now codified at ORS 809.430. Former ORS 487.560, which established the affirmative defense, is now codified at ORS 811.180. See also, note 5, infra. The amended statutes are set forth in the text at 614-15. Although these amendments came prior to the DeMello decision, DeMello interprets the pre-1983 statutes. State v. DeMello, 300 Or 590, 593 n 2, 716 P2d 732 (1986).
The 1983 revision of the motor vehicle code, see note 4, supra, reworded the affirmative defense statute and eliminated the phrase “as required by ORS 482.570.” Or Laws 1983, ch 338, § 599. The language of the statute as amended is set forth in the text at 614-15. Ordinarily, the new language would signal a change in the meaning of the statute. However, the new language was not intended to alter the meaning of the code provisions or to change existing law, but was included merely to “make the law relating to vehicles easier to use, amend and understand by simplifying the language, * * * eliminating confusing references, eliminating verbiage, eliminating some confusing use of terminology and standardizing the presentation of prohibitions and penalties, all in accordance with existing interpretation and use of the vehicle code * * *.” Or Laws 1983, ch 338, § 3. Therefore, the amendments do not affect the statutory interpretation in DeMello.
OEC 202(4) provides for judicial notice of “Regulations, ordinances and similar legislative enactments issued by or under the authority of the United States * * *.”
A statement in the minutes to the 1975 Senate Judiciary Committee hearing on the proposed motor vehicle code supports our conclusion that the defendant has the burden of showing that she did not receive a pink slip. Jackson Frost, speaking on behalf of the District Attorney’s Association, testified that under the proposed revision, “you would not need the postman, or the DMV or the judge to come and testify about the case.” Minutes, Senate Committee on Judiciary 12 (January 23,1975). The defendant can easily testify that she never received a pink slip, if that is the case. If the state introduces evidence that a pink slip was delivered or if the trial court takes judicial notice of postal procedures, the defendant’s testimony that she did not receive a pink slip would raise a question of fact.
The dissenting opinion is based upon the premise that a defendant cannot be convicted of driving while suspended unless the state shows something more than the fact that the defendant’s license was suspended and she was driving on a public highway. State v. Buttrey, 293 Or 575, 651 P2d 1075 (1982) and State v. DeMello, 300 Or 590, 716 P2d 732 (1986) expressly reject the dissent’s position.