Start with Del. Code Ann. tit. 21, § 2740. In Delaware, A first refusal typically leads to a one-year license revocation, with longer periods for subsequent refusals, through DMV administrative processes and a right to hearing. Refusal can be charged or used as an aggravating factor depending on history. Birchfield allows criminal penalties for breath refusal while generally requiring warrants for blood draws used as criminal penalties. That is the question this guide answers for refusing a breathalyzer. Delaware drivers are deemed to consent to chemical testing when arrested for DUI under title 21. Officers must advise of the consequences of refusing a breath, blood, or urine test.
Implied consent in Delaware
Delaware drivers are deemed to consent to chemical testing when arrested for DUI under title 21. Officers must advise of the consequences of refusing a breath, blood, or urine test.
Implied consent is not the same as a Miranda warning. Officers typically must advise of the consequences of refusal before requesting a chemical test. Failure to give a required advisory can affect whether the administrative suspension sticks — a frequent issue in Delaware appellate opinions.
License suspension and administrative hearings
A first refusal typically leads to a one-year license revocation, with longer periods for subsequent refusals, through DMV administrative processes and a right to hearing.
The DMV / administrative track often runs separately from the criminal DUI case. Missing the short window to request an administrative hearing can lock in a suspension even if the criminal charge is later reduced or dismissed. Always calendar the administrative deadline the same day as the arrest.
How the Delaware rule applies
Apply the Delaware authorities in order. The facts are simplified so the statute and the standard are visible.
A driver is arrested for DUI in Delaware and refuses the evidentiary chemical test after the implied-consent advisory.
- Identify the administrative consequence under Del. Code Ann. tit. 21, § 2740: A first refusal typically leads to a one-year license revocation, with longer periods for subsequent refusals, through DMV administrative processes and a right to hearing.
- Separate that track from the criminal case: Refusal can be charged or used as an aggravating factor depending on history. Birchfield allows criminal penalties for breath refusal while generally requiring warrants for blood draws used as criminal penalties.
- Ask whether the refusal can be argued to the jury: Evidence of refusal is generally admissible in the DUI prosecution.
- If the request is for blood rather than breath, apply the warrant rule: Breath tests are the usual stationhouse request; blood draws commonly proceed by warrant, especially after crashes involving injury or death.
In Delaware the refusal question is answered first by Del. Code Ann. tit. 21, § 2740, then by the administrative deadline and the criminal case.
Criminal consequences of refusal
Refusal can be charged or used as an aggravating factor depending on history. Birchfield allows criminal penalties for breath refusal while generally requiring warrants for blood draws used as criminal penalties.
Under Birchfield v. North Dakota, the Fourth Amendment allows criminal penalties for refusing a warrantless breath test incident to a lawful DUI arrest, but generally requires a warrant (or a recognized exception) before the State may impose criminal penalties for refusing a blood draw. Missouri v. McNeely rejected a per-se exigency based solely on natural dissipation of alcohol in the blood. Delaware statutes and case law implement those federal baselines with local detail.
Can refusal be used as evidence?
Evidence of refusal is generally admissible in the DUI prosecution.
Prosecutors often argue consciousness of guilt; defense counsel emphasize confusion, inadequate advisories, or medical inability to provide a sample. The precise jury instruction language is state-specific — search Delaware opinions for “refusal” and “implied consent.”
Breath tests versus blood tests
Breath tests are the usual stationhouse request; blood draws commonly proceed by warrant, especially after crashes involving injury or death.
Practical tip: a driver who refuses breath may still face a warrant-backed blood draw. Refusal does not create a permanent shield against chemical evidence; it mainly adds administrative (and sometimes criminal) consequences on top of the underlying DUI case.
Practical tips
- Ask whether the stop and arrest were lawful — implied consent usually requires a lawful DUI arrest first.
- Diary the administrative hearing deadline immediately.
- Do not confuse portable roadside breath screens with the evidentiary breathalyzer at the station; statutes often treat them differently.
- Research Delaware opinions on implied consent, refusal, and license revocation in LawDiver before a contested DMV hearing.
Case law: implied consent and refusal in Delaware
Freddie FLONNORY, Defendant Below-Appellant, v. STATE of Delaware, Plaintiff Below-Appellee
…tends that the trial court erred in holding that Delaware’s implied consent statute, 21 Del. C. § 2740(a), exempted the blood draw from the Fourth Amendment’s warrant requirement. Second, Flonnory contends that there was no voluntary consent, and that the trial court erred when it did not perform a Fourth Amendment totality of the circumstances analysis to determine whether Flo…
Delaware opinions such as Freddie FLONNORY, Defendant Below-Appellant, v. STATE of Delaware, Plaintiff Below-Appellee are cited where implied consent / breathalyzer refusal is disputed. The court stated: "Delaware’s implied consent statute, 21 Del. C. § 2740(a), exempted the blood draw from the Fourth Amendment’s warrant requirement." That is the language to brief; the rest of the decision supplies the procedural posture.
Alen L. SETH, Jr., Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee
…xilyzer test *438 were obtained in violation of Delaware’s “implied consent” law, 21 Del.C., chapter 27, for failure of the arresting officer to read the statute to defendant or to fully inform defendant of his rights. On the first issue, we hold that the Attorney General, in creating the “Lend-A-Prosecutor” program, acted within the broad statutory power to act in the public i…
Alen L. SETH, Jr., Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee is worth reading on Delaware implied consent / breathalyzer refusal because the court put the point in its own words: "Delaware’s “implied consent” law, 21 Del.C., chapter 27, for failure of the arresting officer to read the statute to defendant or to fully inform defendant of his rights." Use that passage as the starting point, then read the facts that precede it.
Denise BRANK, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee
…t there are “significant differences” between the Minnesota implied consent statute at issue in Nyflot and the Delaware implied consent law involved here, which diminish Nyflot’s prece-dential value. The defendant’s due process claim in Nyflot was rejected by the Minnesota Supreme Court because they viewed the implied consent law as requiring the suspect to take the test. Nyflo…
On implied consent / breathalyzer refusal, Denise BRANK, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee speaks to the Delaware dispute in this passage: "Minnesota implied consent statute at issue in Nyflot and the Delaware implied consent law involved here, which diminish Nyflot’s prece-dential value." The surrounding opinion shows how the court applied that language to the record.
William J. WARREN, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee
…ith “operating” a vehicle while under the influence and the implied consent statute, 21 Del.C. § 2749, 2 allows admission of such refusal only when the charge is “driving” while under the influence. The argument is without merit. While Delaware case law indicates that there is a distinction between the terms “drive” and “operate” for certain purposes of the motor vehicle laws,…
William J. WARREN, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee is worth reading on Delaware implied consent / breathalyzer refusal because the court put the point in its own words: "Del.C. § 2749, 2 allows admission of such refusal only when the charge is “driving” while under the influence. The argument is without merit." Use that passage as the starting point, then read the facts that precede it.
STATE of Delaware v. Joseph A. PURCELL
STATE of Delaware v. Joseph A. PURCELL, 1975 Del. Super. LEXIS 186 (1975)
…el.C. 4176(a). The officer advised the Defendant about the “implied consent” law and told the Defendant that if he refused to submit to the test, he would lose his driving privileges for six months. The Defendant contends that since the Defendant was arrested for having “in actual physical control a motor vehicle while under the influence,” 1 the Implied Consent Act was not app…
On implied consent / breathalyzer refusal, STATE of Delaware v. Joseph A. PURCELL speaks to the Delaware dispute in this passage: "C. 4176(a). The officer advised the Defendant about the “implied consent” law and told the Defendant that if he refused to submit to the test, he would lose his driving privileges for six months." The surrounding opinion shows how the court applied that language to the record.
Jeffrey E. McCANN, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee
…ed rather than submit to a blood test, thereby invoking the implied consent laws; and (2) whether the Superior Court erred as a matter of law in failing to suppress blood test results obtained through the use of allegedly unnecessary and unreasonable force. On this record we find no merit to the appellant’s claims, and affirm. I. On November 27, 1988, McCann was stopped by Serg…
Practitioners open Jeffrey E. McCANN, Defendant Below, Appellant, v. STATE of Delaware, Plaintiff Below, Appellee when Delaware implied consent / breathalyzer refusal turns on the distinction in this sentence: "Superior Court erred as a matter of law in failing to suppress blood test results obtained through the use of allegedly unnecessary and unreasonable force. On this record we find no merit to the appellant’s claims, and affirm. I." Do not lift it out of the facts the court was deciding.
Key takeaways
- Primary authority: Del. Code Ann. tit. 21, § 2740.
- Administrative hit: A first refusal typically leads to a one-year license revocation, with longer periods for subsequent refusals, through DMV administrative processes and a right to hearing.
- Criminal exposure: Refusal can be charged or used as an aggravating factor depending on history.
- Evidence: Evidence of refusal is generally admissible in the DUI prosecution.
- Blood vs. breath: federal Supreme Court doctrine in Birchfield and McNeely still frames warrant rules.
Frequently asked questions
What happens if I refuse a breathalyzer in Delaware?
A first refusal typically leads to a one-year license revocation, with longer periods for subsequent refusals, through DMV administrative processes and a right to hearing. Refusal can be charged or used as an aggravating factor depending on history.
Is refusal a separate crime in Delaware?
Refusal can be charged or used as an aggravating factor depending on history. Birchfield allows criminal penalties for breath refusal while generally requiring warrants for blood draws used as criminal penalties.
Will the prosecutor tell the jury I refused?
Evidence of refusal is generally admissible in the DUI prosecution.
Do I need a warrant for a blood draw?
Breath tests are the usual stationhouse request; blood draws commonly proceed by warrant, especially after crashes involving injury or death. See also Birchfield and McNeely linked above.