The honest answer to "is a DWI different from a DUI?" is not "they mean the same thing." It is: they are the short names of statutes, and you have to read the statute. Two states can use the same three letters for offences with different elements. One state can use two different labels for two different crimes, one of which is not a crime at all. And in more than one state, the rule that makes you file an SR-22 turns out not to be attached to the impaired-driving statute in the first place.
This page reads six of those statutes in full and then reads the filing provision that sits behind each of them. No page anywhere puts those two halves next to each other, which is why the question keeps getting answered with a synonym list.
Six states, six statutory names, and the thresholds under them
Every row below was read in the state's own text on 2 September 2026. Where the live host refused the connection, the Internet Archive capture of that same URL is cited, with its date.
| State |
Statutory name |
Section |
What the statute makes unlawful |
Source, read 2026-09-02 |
| Texas |
Driving While Intoxicated |
Tex. Penal Code § 49.04 |
Being "intoxicated while operating a motor vehicle in a public place" — where § 49.01(2) defines intoxicated as either loss of "the normal use of mental or physical faculties" or "an alcohol concentration of 0.08 or more" |
Archive capture, 16 Jan 2025 |
| New York |
Driving While Intoxicated and Driving While Ability Impaired — separate offences |
N.Y. Veh. & Traf. Law § 1192(1), (2), (2-a), (3), (4), (4-a) |
Subd. 1 impairment by alcohol with no number attached; subd. 2 per se at .08; subd. 2-a aggravated at .18 or with a child 15 or under; subd. 3 "in an intoxicated condition"; subd. 4 impairment by a drug; subd. 4-a the combination |
nysenate.gov |
| Minnesota |
Driving While Impaired |
Minn. Stat. § 169A.20, subd. 1 |
Eight separate clauses, including alcohol concentration "at the time, or as measured within two hours of the time, of driving" of 0.08 or more, and a cannabis clause added by later amendment |
revisor.mn.gov |
| California |
Driving Under the Influence |
Cal. Veh. Code § 23152(a), (b), (d), (e) |
(a) "under the influence of any alcoholic beverage"; (b) 0.08 percent or more; (d) 0.04 in a commercial vehicle; (e) 0.04 with "a passenger for hire" aboard, since 1 July 2018 |
leginfo.legislature.ca.gov |
| North Carolina |
Impaired driving — neither DUI nor DWI appears |
N.C.G.S. § 20-138.1 |
Driving "while under the influence of an impairing substance"; or 0.08 or more "at any relevant time after the driving"; or any amount of a Schedule I substance or its metabolites |
Archive capture, 2 Feb 2026 |
| Maine |
OUI (Criminal OUI) |
29-A M.R.S. § 2411(1-A) |
Operating "While under the influence of intoxicants" or with "an alcohol level of 0.08 grams or more of alcohol per 100 milliliters of blood or 210 liters of breath" |
legislature.maine.gov |
Three observations from that table that the statutes do not make about each other.
The 0.08 is the same everywhere and the timing rule is not. Minnesota measures alcohol concentration "at the time, or as measured within two hours of the time" of driving. North Carolina reaches a concentration of 0.08 "at any relevant time after the driving." California builds a rebuttable presumption from a test taken "within three hours after the driving." Same number, three different rules about when the number has to have existed — and that, not the label, is what a defence turns on.
Two of the six do not require a number at all. Texas's § 49.01(2) is written in the alternative: loss of normal faculties or 0.08. So is California's § 23152(a) as against (b), and Maine's § 2411(1-A)(A)(1) as against (2). A conviction under the first prong of any of these is a full impaired-driving conviction with no breath figure behind it, which is why "what was your BAC?" is not a question that predicts the outcome.
Only New York splits the offence by severity in the statute itself. Everywhere else the grading is done by prior-offence count or by aggravating facts. New York grades the conduct.
New York is the state where the label really does change the answer
If you want a state where "DWI" and something-else are genuinely different, it is New York, and the difference is not a matter of degree.
Under Veh. & Traf. Law § 1193(1)(a), a violation of § 1192(1) — Driving While Ability Impaired, the alcohol one with no threshold in it — "shall be a traffic infraction and shall be punishable by a fine of not less than three hundred dollars nor more than five hundred dollars or by imprisonment in a penitentiary or county jail for not more than fifteen days." A traffic infraction. Not a crime.
A violation of § 1192(2), (3), (4) or (4-a) — the per se DWI, common-law DWI, DWAI/Drugs and the combined-influence offence — is a misdemeanour under § 1193(1)(b).
The licence consequence splits the same way, and this is the part that matters if you are trying to work out what you will have to do to drive again:
"(a) Suspensions. Except as otherwise provided in this subdivision, a license shall be suspended and a registration may be suspended for the following periods: (1) Driving while ability impaired. Ninety days, where the holder is convicted of a violation of subdivision one of section eleven hundred ninety-two of this article"
"(b) Revocations. A license shall be revoked and a registration may be revoked for the following minimum periods: ... (2) Driving while intoxicated or while ability impaired by drugs or while ability impaired by the combined influence of drugs or of alcohol and any drug or drugs; aggravated driving while intoxicated. Six months, where the holder is convicted of a violation of subdivision two, three, four or four-a of section eleven hundred ninety-two of this article. One year where the holder is convicted of a violation of subdivision two-a of section eleven hundred ninety-two of this article."
Ninety days suspended for the infraction; a minimum six-month revocation for the misdemeanour; a minimum year for aggravated DWI at .18. A suspension and a revocation are not the same administrative animal — one ends, the other has to be applied out of — so within a single state, on the same facts, which subdivision you plead to changes both the length and the kind of the consequence. Anyone who tells you the label is cosmetic has not read § 1193.
The finding that ends the argument: the filing is often not attached to the impaired-driving statute at all
Here is the part nobody publishes, and it is the reason the DWI-versus-DUI question is the wrong question. In four of these six states, the provision that makes a driver file proof of insurance is keyed to something other than the impaired-driving section.
Texas. The Penal Code creates the offence at § 49.04. The filing provision is in a different code entirely: Tex. Transp. Code § 601.231, and it reads, in the Archive capture of 16 December 2025:
"If a person is convicted of an offense under Section 601.191 and a prior conviction of that person under that section has been reported to the department ... the department shall suspend the driver's license of the person unless the person files and maintains evidence of financial responsibility with the department until the second anniversary of the date of the subsequent conviction."
Section 601.191 is driving without financial responsibility. Not § 49.04. The two-year filing period that gets quoted on every Texas page is triggered by a second uninsured driving conviction. And the string "SR-22" does not appear anywhere in the archived text of chapter 601; what appears, five times, is "certificate of insurance." The chapter's baseline obligation, § 601.051, is simply that "A person may not operate a motor vehicle in this state unless financial responsibility is established for that vehicle."
Minnesota. Same shape. The crime is § 169A.20. The certificate requirement is administrative, in Minn. R. 7409.3900, whose title is "REINSTATEMENT AFTER INSURANCE-RELATED SUSPENSION" and whose text keys entirely off § 169.797 — the no-insurance section. Paragraph B requires a certificate only "if the person's driver's license has been withdrawn two or more times under Minnesota Statutes, section 169.797, within a five-year period." A first Minnesota DWI is not in that rule. Neither is a second.
Maine. Maine goes further than not mentioning OUI: it excludes it by name. 29-A M.R.S. § 1603(1) gives the Secretary of State the power to demand proof of financial responsibility on receipt of an abstract of conviction "for a violation of a motor vehicle law other than OUI." Only subsection 2 reaches OUI, and only on a repeat: proof is required "when the person has been previously convicted within a 10-year period of OUI." Subsection 3 then sets the length — "the person shall maintain proof of financial responsibility for at least 3 years" — which runs after reinstatement, not during the suspension. Maine's first-offence suspension itself is 150 days under § 2411(5)(A)(2), and § 2508(1)(A-1) lets it be cut to 30 days served with an approved ignition interlock fitted for the remainder. A first Maine OUI is therefore 150 days on paper, 30 days with an interlock, and no filing at all unless there is a prior within ten years — which is the opposite of the three-year figure that circulates for it, and is set out with the rest of the state's ladder on the Maine page.
North Carolina. North Carolina requires proof of financial responsibility from everybody. N.C.G.S. § 20-7(c1) — read in the Archive capture of 11 November 2025, because ncleg.gov returns 403 to this server — opens: "The Division may not issue a drivers license to a person until the person has furnished proof of financial responsibility." The certificate is the ordinary route, and it carries a deadline almost nobody mentions: it "shall remain effective proof of financial responsibility for a period of 30 consecutive days following the date the certificate or facsimile is issued but shall not in and of itself constitute a binder or policy of insurance." Thirty days, and the certificate is not itself insurance. In a state where every applicant files, the label on your conviction cannot be what decides whether you file.
Put those four together and the pattern is hard to miss: in Texas and Minnesota the certificate belongs to the uninsured-driving lane, in Maine it is switched off for a first OUI by name, and in North Carolina it applies to everyone regardless. The word on the citation is not the variable. The section number is. That is the same lesson as the one in SR-22 after too many points, where the point system and the financial-responsibility chapter also turn out to live in different places and not cross-reference each other, and it is why how long an SR-22 lasts has to be answered state by state rather than trigger by trigger.
Virginia is the counter-example, and it is worth knowing because it is the shape everybody assumes is normal.
Va. Code § 46.2-439, as amended in 2025, writes the form's name into the statute:
"Such certificate shall be an American Association of Motor Vehicle Administrators Uniform Financial Responsibility Form (SR-22), or Virginia Uniform Financial Responsibility Form (FR-44), depending on the circumstances."
"Depending on the circumstances" is answered by § 46.2-411(B), which requires proof of financial responsibility in the future before restoring a licence revoked or suspended "pursuant to § 46.2-389, 46.2-391, 46.2-391.1, or 46.2-417" — a closed list of four sections, two of which are the mandatory-revocation and repeat-intoxication provisions. So in Virginia the statute under which you were convicted really does select the paperwork, and the higher-limit FR-44 exists precisely because an impaired-driving conviction is treated as a different class of case. If you are working out which of the two applies to you, SR-22 vs FR-44 sets the two forms against each other, and the rest of what a conviction sets in motion is in SR-22 after a DUI.
The practical instruction that comes out of all six states is one sentence: stop comparing labels and get the section number off your disposition. It is printed on the court paperwork. With it you can find the offence in your state's code, find whether the financial-responsibility chapter names that section, and stop guessing. Without it, every answer you read — including a well-sourced one — is about somebody else's statute.
What I could not verify
Whether the Texas DPS conditions a post-DWI reinstatement on an SR-22 in practice. What is verified is that the string does not appear in the archived text of Transportation Code chapter 601, and that § 601.231's two-year filing period is triggered by a repeat conviction under § 601.191 rather than by § 49.04. Texas requires evidence of financial responsibility under § 601.051 and plainly conditions reinstatements on it; the administrative detail of which form and for how long after a DWI specifically is a DPS matter, and dps.texas.gov is not reachable from this server. Ask the DPS, quoting the section.
Texas and North Carolina in the live hosts. statutes.capitol.texas.gov now serves a JavaScript application that returns no statutory text to a plain request, and ncleg.gov returns 403 here. Both are cited above through Internet Archive captures of the same URLs, dated in the citation. A 2025 or 2026 capture is not the same thing as today's text; if a later amendment matters to your case, check the live site from a browser.
California's post-conviction filing rule. The offence text in § 23152 was read directly at leginfo.legislature.ca.gov. The section that conditions reinstatement after a conviction could not be opened cleanly from this server — the code viewer returned a disambiguation page rather than the section — so nothing about California's filing requirement is asserted on this page. Only the offence definition is.
Whether any state treats "DUI" and "DWI" as two distinct offences. New York's split is between DWI and DWAI, not between DWI and DUI, and no statute among the six read here creates both a "DUI" and a "DWI" as separate offences. That is a claim about the whole body of state law, and six states are not fifty, so it is stated here as what was found and not as what is true everywhere.
Frequently Asked Questions
Is a DWI worse than a DUI?
Across states the two are usually just different legislatures' names for the same kind of offence, so the comparison has no answer in the abstract. Within one state it can have a very sharp answer: in New York, § 1192(1) Driving While Ability Impaired is "a traffic infraction" carrying a fine of $300 to $500 and a 90-day suspension under § 1193, while § 1192(2) or (3) Driving While Intoxicated is a misdemeanour carrying a minimum six-month revocation, and § 1192(2-a) aggravated DWI at .18 carries a minimum year. Compare sections, not acronyms.
Does the SR-22 requirement change depending on whether it is called a DUI or a DWI?
In the six states read for this page, the filing requirement is not keyed to the label and often not keyed to the impaired-driving statute at all. Texas's two-year filing provision, § 601.231, is triggered by a repeat conviction for driving without financial responsibility under § 601.191. Minnesota's certificate rule, 7409.3900, is keyed to two or more withdrawals under § 169.797, the no-insurance section. Maine's § 1603(1) covers convictions "other than OUI" and only reaches OUI on a repeat within ten years. North Carolina requires proof from every licence applicant under § 20-7(c1).
Why do states use different words for the same thing?
Because each name is the title of a section in that state's own code, written at a different time by a different legislature, and the title tracks the drafting rather than the seriousness. Texas legislates "Driving While Intoxicated" in the Penal Code, Minnesota "driving while impaired", California "driving under the influence" in the Vehicle Code, Maine "OUI", and North Carolina simply "Impaired driving" — with neither DUI nor DWI appearing in § 20-138.1 at all. North Carolina's section even carries the exclusion that for its purposes "the word 'vehicle' does not include a horse."
Is Maine's OUI treated the same as a DUI elsewhere for filing purposes?
No, and Maine's statute is explicit about it. 29-A M.R.S. § 1603(1) authorises the Secretary of State to demand proof of financial responsibility after a conviction "for a violation of a motor vehicle law other than OUI"; subsection 2 reaches OUI only where the person "has been previously convicted within a 10-year period of OUI"; and subsection 3 sets three years of maintained proof after reinstatement. The first-offence suspension is 150 days under § 2411(5)(A)(2), reducible to 30 days served with an approved ignition interlock under § 2508(1)(A-1).
Does FR-44 apply to both DUI and DWI convictions?
Virginia's statute names both forms and lets the circumstances choose: Va. Code § 46.2-439 provides that the certificate "shall be an American Association of Motor Vehicle Administrators Uniform Financial Responsibility Form (SR-22), or Virginia Uniform Financial Responsibility Form (FR-44), depending on the circumstances", and § 46.2-411(B) sets out the closed list of four sections whose suspension or revocation triggers proof at all. Which form applies is therefore decided by the section you were convicted or revoked under, not by which of the two acronyms your state prefers. Florida also operates an FR-44; the limits and duration for it are covered on this site's Florida and FR-44 pages.
What do I actually need to look up for my own case?
Three things, in this order, all of them free. First, the section number on your court disposition — that is the only identifier that means anything across state lines. Second, whether your state's financial-responsibility chapter names that section: in Texas, Minnesota, Maine and North Carolina it does not, which changes the answer completely. Third, the date the obligation is measured from, because that is set by a different provision again. Then ask the agency that imposed the action to confirm it in writing, quoting the sections back to them.
