“Impaired” Means “Impaired to Any Extent” Across VTL § 1192, Including Drugs and Combined Alcohol/Drugs

1. Introduction

In People v Dondorfer (2026 NY Slip Op 00823), the New York Court of Appeals resolved a conflict over how to define “impaired” under the Vehicle and Traffic Law when impairment is alleged to result from drugs or a combination of alcohol and drugs. The defendant, Phillip Dondorfer, was stopped while driving with his fifteen-year-old daughter in the vehicle. He admitted to consuming “a couple of strong beers” and smoking marijuana, failed field sobriety tests, and was evaluated by a drug recognition expert who concluded he was impaired by the combination of alcohol and cannabis.

A grand jury indicted him for, among other charges, aggravated driving while ability impaired by a combination of drugs and alcohol with a child in the vehicle (Vehicle and Traffic Law § 1192 [2-a] [b], [4-a]). The core dispute was whether “impaired” in § 1192 (4-a) should carry the long-standing People v Cruz “to any extent” meaning, or the more demanding standard adopted by the Third Department in People v Caden N., which effectively imported the Cruz “intoxication” standard into drug-related impairment cases.

2. Summary of the Opinion

The Court of Appeals held that the term “impaired” must be interpreted consistently across Vehicle and Traffic Law § 1192 using the definition this Court announced in People v Cruz. Accordingly:

  • Impaired means the defendant has “actually impaired, to any extent, the physical and mental abilities” expected of a reasonable and prudent driver.
  • Courts may not redefine “impaired” for drug-related offenses to require the higher “incapable” threshold associated with intoxication.

The Court therefore affirmed the Fourth Department’s order reinstating the dismissed count, rejected the approach in People v Caden N., and endorsed uniform statutory usage: the same word in the same statute presumptively has the same meaning.

3. Analysis

A. Precedents Cited

1) People v Cruz

People v Cruz supplied the central definitions. The Court in Dondorfer treated Cruz not as an alcohol-only gloss, but as the authoritative judicial construction of the statutory terms “impaired” and “intoxicated” as used in § 1192. The key move is textual: because § 1192 (1) and § 1192 (4-a) use the same term (“impaired”), Cruz’s definition carries across.

2) People v Caden N.

The defendant’s argument relied on People v Caden N., where the Third Department reasoned that Cruz’s impairment standard was “in the limited context” of alcohol impairment under § 1192 (1), and adopted a stricter definition for drug impairment aligned with Cruz’s intoxication standard (i.e., “incapable”). Dondorfer rejects that methodology as inconsistent with statutory text and interpretive canons, and expressly states that Caden N. “should no longer be followed.”

3) People v Ambrosio

The Court noted that the Third Department itself later narrowed Caden N. in People v Ambrosio, limiting it to “the crime of vehicular manslaughter” and not to “the underlying crimes of driving while ability impaired by drugs or by a combination thereof.” Dondorfer goes further: rather than merely limiting Caden N., it removes it as a governing interpretive source for impairment definitions under § 1192.

4) People v Litto

People v Litto played two key roles. First, it reaffirmed that “impaired” and “intoxicated” are distinct standards, supporting the Court’s refusal to collapse “impaired” into “intoxicated” for drug-related offenses. Second, it supported the broader proposition that the Legislature intentionally structured § 1192 to treat alcohol and drugs differently in certain respects (including penalties). That legislative policy choice undercut the rationale in Caden N. that focused on penalty disparities.

5) Statutory interpretation cases and canons

The Court grounded its analysis in standard interpretive principles, invoking:

  • People v Roberts (statutory interpretation aims to effectuate legislative intent; begin with text).
  • People v Bay (undefined words of ordinary import get their usual meaning).
  • Matter of Moran Towing and Transp. Co. v New York State Tax Commn. (words may carry a “precise and well settled legal meaning”).
  • Rangolan v County of Nassau (different terms in the same statute imply different concepts).
  • People v Corr (same word used in different parts of a statute is presumed used in the same sense).
  • Bolden (cited for the “same term, same meaning” presumption).
  • People v Hardy and Matter of Odunbaku v Odunbaku (Legislature presumed aware of decisional law when enacting statutes).
  • People v Robinson (re-enactment/usage without override signals intent to adopt existing judicial construction).
  • Flores v Lower E. Side Serv. Ctr., Inc. (courts should not second-guess legislative policy choices).

B. Legal Reasoning

The Court’s reasoning is a tightly linked chain of textual consistency, judicial-definition carryover, and legislative-acquiescence logic:

  1. Textual anchor: Vehicle and Traffic Law § 1192 repeatedly uses “impaired” and “intoxicated” as different labels for different degrees of diminished driving ability, but does not define either term.
  2. Existing judicial meaning: People v Cruz supplies settled definitions based on ordinary meaning: “impaired” (“to any extent”) versus “intoxicated” (“incapable”).
  3. Same word, same meaning: Because § 1192 (4-a) uses the same word (“impaired”) as § 1192 (1), the presumption is that the Legislature intended the same meaning throughout § 1192. No textual signal indicates an offense-specific definition for drug-related impairment.
  4. Avoiding internal contradiction: Defendant’s approach would give “impaired” two meanings within the same statute—one (lower) standard for alcohol-only impairment, and another (higher) standard for drugs/combined cases that mirrors “intoxication.” The Court refused to adopt a reading that effectively rewrites the statute and collapses the Legislature’s chosen terminology.
  5. Legislative timing/acquiescence: The Legislature enacted § 1192 (4-a) and § 1192 (2-a) (b) long after Cruz. By using “impaired” again without “explicitly overriding” Cruz, the Legislature is presumed to have incorporated the established definition.
  6. Policy deference: Even if penalty differences make drug impairment seem “under”- or “over”-punished compared to alcohol, that concern does not justify altering statutory elements. Penalty design is for the Legislature, not judicial redefinition.

C. Impact

People v Dondorfer is consequential because it stabilizes the element-definition of “impaired” across the DWI statutory scheme:

  • Uniform charging and instructions: Prosecutors and courts should use the Cruz “to any extent” impairment standard for § 1192 impairment offenses, including § 1192 (4) (drugs) and § 1192 (4-a) (combined influence).
  • Rejection of a heightened “drug impairment” element: Defendants can no longer argue that drug-related “impairment” requires proof that they were “incapable” (a de facto intoxication standard) merely because the impairment source is drugs or mixed substances.
  • Grand jury litigation: The decision reduces vulnerability of indictments to dismissal based on the theory that the grand jury was instructed on the “wrong” impairment standard when the instruction matched Cruz.
  • Doctrinal clarity after departmental divergence: By disapproving People v Caden N. (even after the Third Department’s narrowing in People v Ambrosio), the Court of Appeals reasserts statewide uniformity on a foundational term in § 1192 litigation.

4. Complex Concepts Simplified

“Impaired” vs “Intoxicated”
Under People v Cruz, impaired is a lower threshold: alcohol (and now, per Dondorfer, any § 1192 “impaired” offense) affects driving abilities to any extent. Intoxicated is higher: the driver is incapable of using the needed physical and mental abilities.
Statutory interpretation: “same word, same meaning”
If the Legislature uses the same term (“impaired”) in multiple subdivisions of the same statute, courts presume it means the same thing each time—unless the text clearly signals otherwise.
Legislative acquiescence / awareness of decisional law
When the Legislature enacts a provision after courts have already defined a statutory term, and the Legislature uses that same term without changing it, courts often treat that as acceptance of the existing judicial definition.
Drug Recognition Expert (DRE)
A DRE is a trained officer who uses a standardized, multi-step protocol to evaluate whether a driver is impaired by drugs (or combined substances). In this case, the DRE’s conclusion supported probable impairment by alcohol plus cannabis.
Grand jury instruction and “legally sufficient evidence”
A grand jury must be instructed on the correct legal elements. If the definition of an element is misstated, a court may find the grand jury could not properly determine whether the evidence established each element. Here, because Dondorfer holds the Cruz impairment definition applies, the grand jury instruction was proper.

5. Conclusion

People v Dondorfer establishes a clear statewide rule: the term “impaired” in Vehicle and Traffic Law § 1192, including drug-related and combined alcohol/drug subdivisions, carries the People v Cruz meaning—impairment “to any extent,” not “incapable.” The Court’s approach reinforces textual consistency within § 1192, respects the Legislature’s choice to use distinct terms (“impaired” versus “intoxicated”), and rejects policy-driven redefinitions that would effectively rewrite statutory elements.