We granted separate petitions for certio-rari to review decisions of the Routt County District Court and the Pueblo County District Court affirming county court rulings that admission of evidence at trial of a defendant’s refusal to take a blood or breath alcohol test does not violate a defendant’s state constitutional privilege against self-incrimination and that failure to warn a defendant that refusal to take the test would be admissible at trial does not violate a defendant’s state constitutional right to due process. 1 We also granted certiorari to consider whether one of the trial courts erred in admitting the evidence of refusal as relevant and not unduly prejudicial and the other erred in instructing the jury that evidence of refusal could be used along with other evidence to determine a defendant’s guilt or innocence. We affirm the judgments of the district courts.
Shortly after midnight on November 16, 1983, a Routt County deputy sheriff followed a pickup truck for a mile and watched the truck, being driven by the defendant Glen Eugene Cox, weave on to the shoulder of the road four times. The officer stopped the truck, determined that Cox had the odor of an alcoholic beverage on his breath, and gave Cox a roadside sobriety test, which he failed. The officer advised Cox that he must submit to a blood or breath test and that refusal to take the test would result in revocation of his driver’s license. Cox replied, “No test. I’m not going to take any test.” Cox was not advised that his refusal to take the test could be introduced as part of the evidence against him at trial. 2 Cox was charged with driving under the influence of intoxicating liquor as proscribed by section 42-4-1202(l)(a), 17 C.R.S. (1984). Before trial he moved to exclude evidence of his refusal to take the test. The Routt County Court denied his motion without comment, and the district attorney presented evidence of Cox’s refusal to the jury. The jury found him guilty of driving while ability impaired. § 42-4-1202(l)(b), 17 C.R.S. (1984).
Albert J. Quiming, the defendant in the companion case, was charged with driving under the influence of intoxicating liquor, § 42-4-1202(l)(a), 17 C.R.S. (1984); careless driving, § 42-4-1204, 17 C.R.S. (1984); and operating a vehicle without insurance, § 42-4-1218(1), 17 C.R.S. (1984), after he ran his pickup truck off the street and into a chain link fence in Pueblo on February 25, 1984. Quiming was not injured, but he neither responded to nor cooperated with Pueblo police officers. The officers smelled an alcoholic beverage on Quiming’s breath and discovered a bottle containing some whiskey in his pocket. One of the officers asked Quiming to take a blood or breath test. The officer explained to Quim-ing that he would lose his license if he refused. Quiming was not advised that his *155 refusal to take the test could be used against him in court. Over Quiming’s objection, the district attorney introduced as evidence at trial Quiming’s refusal to take the test, and the court instructed the jury, again over objection, as follows:
If a person refuses to submit to such chemical test, then the jury may consider such refusal along with all other competent evidence in determining the Defendant’s guilt or innocence.
The jury found Quiming guilty of all charges. The district courts for Routt County and Pueblo County affirmed the county court decisions in both cases.
I.
Section 42-4-1202(1), 17 C.R.S. (1984), makes it a misdemeanor for a person to drive a vehicle while under the influence of intoxicating liquor. Section 42-4-1202(3)(a)(II) provides:
Any person who drives any motor vehicle upon the streets and highways and elsewhere throughout this state may be required to submit to a chemical test of his breath or blood for the purpose of determining the alcohol content of his blood or breath, if arrested for any misdemeanor offense arising out of acts alleged to have been committed while the person was driving a motor vehicle in violation of subsection (1) or (1.5) of this section.
Subsection (3)(d) provides that if a person refuses to take a chemical test as provided in subsection (3)(a), he is subject to license revocation. Subsection (3)(e) provides:
If a person refuses to submit to chemical tests as provided in this subsection (3) and such person subsequently stands trial for a violation of subsection (1) of this section, the refusal to submit to any test shall be admissible into evidence at the trial, and a person may not claim the privilege against self-incrimination with regard to admission of refusal to submit to a chemical test.
The defendants claim that the statute allowing use of the refusal as evidence violates the privilege against self-incrimination as guaranteed by article II, section 18 of the Colorado constitution. The defendants do not base their argument on the United States constitution because in
South Dakota v. Neville,
Cox contends that the Colorado constitutional privilege against self-incrimination provides broader protection,
4
relying on language in
Vigil v. People,
Our Constitution protects one against an admission of guilt coming from his own lips under compulsion and against the will of the accused, and has no relation whatever to real as distinguished from testimonial evidence.
*156
Id.
at 547. The language that Cox relies on is consistent with the United States Supreme Court’s interpretation of the fifth amendment in
Neville.
Cox does not articulate any difference of significance between the fifth amendment and article II, section 18 of the Colorado constitution. Instead, he relies on
State v. Andrews,
Quiming asks us to hold that refusal to take a blood or breath test is communication of the thoughts and mental processes of the accused and therefore protected by the privilege against self-incrimination because the refusal is testimonial evidence. Prior to
Neville,
a few state courts had held that a refusal to take the test was testimonial.
Andrews,
In
Neville,
the Court declined to base its holding on whether refusal to take a test was testimony or conduct.
The General Assembly has determined that evidence of refusal to submit to a blood or breath test is admissible at trial. Statutes are presumed constitutional, with the burden being on the party challenging the statute to establish its unconstitutionality beyond a reasonable doubt.
People v. West,
II.
Both defendants contend that the admission into evidence of their refusal to submit to a blood or breath test violated their rights to due process under article II, section 25 of the Colorado constitution.
6
We addressed this contention in the context of a driver’s license revocation proceeding in
Brewer v. Motor Vehicle Div. Dept. of Rev.,
Moreover, in
South Dakota v. Neville,
III.
Cox argues that his refusal to take the blood or breath test is inadmissible at trial as irrelevant or, if relevant, as unduly prejudicial. Quiming argues that the trial court erred in instructing the jury to consider his refusal to take the blood or breath test along with other evidence in determining his guilt or innocence. The arguments, although phrased differently, are essentially the same.
CRE 401 defines “relevant evidence” as: evidence having any tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence.
CRE 403 further provides:
Although relevant, evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice, confusion of the issues, or misleading the jury, ...
*158
Most state courts admit evidence of refusal as relevant because the refusal is conduct that shows a consciousness of guilt in the same manner as destruction of evidence, flight, or threats against witnesses.
Hill v. State,
The decision by this court that comes closest to supporting Cox’s argument is
People v. Quintana,
In contrast to Doyle, Miranda warnings are not involved in the present case. More *159 over, in contrast to Quintana, this case involves a refusal, not silence. Silence in the ordinary sense means a forbearance from speech or standing mute on a particular matter, see Webster’s New International Dictionary 2116-17 (1976), and for this reason often may be inherently ambiguous. Refusal means a rejection of something demanded or requested, id. at 1910, and generally will involve communication of an unwillingness to comply with a stated demand or request of another. A driver’s refusal to submit to a blood or breath test, therefore, has less ambiguity than silence, at least with respect to the refusal itself. 10
As we held in
Brewer v. Motor Vehicle Div., Dept. of Rev.,
The trial court did not err in denying Cox’s motion to exclude evidence that he refused to take a blood or breath test; the evidence was relevant and not unduly prejudicial. Similarly, the trial court did not err in denying Quiming’s objection to the jury instruction that allowed his refusal to take the test to be considered along with other evidence in determining his guilt or innocence.
Judgments affirmed.
Notes
. Certiorari review of a district court determination in a matter appealed from the county court is subject to this court's discretion. § 13-6-310(4), 6 C.R.S. (1973). We consolidated these cases for argument and decision.
. At a pretrial hearing on the defendant’s motion to exclude evidence of his refusal to take the test, the deputy sheriff testified that he did not advise Cox that his refusal to take the test could be used as evidence against him at trial. The deputy, however, suggested at trial that he might have advised the defendant that one consequence of refusal was that the refusal could be admitted as evidence against the defendant. On appeal, the district court accepted the version of the advisement in the transcript of the pretrial hearing and determined that the defendant was not advised that his refusal to take any test could be used at trial.
.
South Dakota v. Neville,
. Article II, section 18 of the Colorado constitution states that “[n]o person shall be compelled to testify against himself in a criminal case.” The fifth amendment of the United States constitution provides that no person “shall be compelled, in any criminal case, to be a witness against himself.”
. Some state courts, before the decision in
Ne-ville,
found that evidence of refusal was inadmissible because statutes in those states gave drivers an absolute right of refusal that would be rendered a nullity if evidence of refusal could be used against the drivers in court.
See City of St. Joseph
v.
Johnson,
. Article II, section 25 of the Colorado constitution provides, "No person shall be deprived of life, liberty or property, without due process of law.”
. Some state courts have determined that evidence of refusal to take a test is inadmissible because a state statute expressly excludes evidence of refusal.
See, e.g., Davis v. State,
.
Miranda v. Arizona,
. After
Doyle
v.
Ohio,
. There is case law in Colorado supporting the relevance of evidence, other than silence, that is susceptible to more than one interpretation. In
Bush v. Jackson,
. In Alaska, the relevancy of evidence of refusal and its prejudicial potential are considered on a case-by-case basis.
Svedlund v. Anchorage,
