DUI in Maryland: the law, the limits and the device
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Maryland calls it DUI — driving under the influence, and you will see DWI and drunk driving used for the same offense. Maryland prosecutes two distinct offenses. DUI is the more serious one; DWI — driving while impaired — is the lesser charge, and which one you face changes both the penalty and the room to negotiate. What follows is what this state sets, taken from its own published rules rather than from a national summary.
What Maryland law actually requires
Maryland runs one of the oldest interlock programs in the country, and it is built as an alternative to losing your license rather than an addition to it. You get a "J" restriction and report to your provider every 30 days; they send the MVA a report covering high readings, missed or failed retests, tampering and how often the car was used.
- First offense: Set on referral by the MVA, a court or an administrative law judge; a repeat offender within five years faces a year of suspension or a year in the program, then a further restricted year
- Lockout threshold: 0.025% — the MVA states the car will not start above that reading; missed service visits, tampering and bypass attempts also count as violations
- Program run by: Maryland Motor Vehicle Administration
Source: mva.maryland.gov, checked 2026-08-23
DUI vs DUI in Maryland
In Maryland there is one offense and one label. If you have seen DWI, OWI or OVI used elsewhere, that is another state’s vocabulary for the same conduct — nothing about the seriousness changes when you cross a state line, only the letters on the paperwork.
Whatever it is called, the licensing consequence is the same shape: a suspension, then the device as the condition of driving again. All six abbreviations, side by side →
Can you get a DUI on a bike or a horse in Maryland?
It turns on one word in the statute. Where the law says “vehicle”, no engine is required and the charge can reach a bicycle, a horse or a mobility scooter. Where it says “motor vehicle”, the analysis is different. This is decided by your state’s own wording, not by national custom, and it is the first thing to check before assuming a bike ride home is safe.
How often this happens in Maryland
Federal crash records show the scale the state is legislating against, and how it compares with the country.
Cases are heard where the stop happened, and volume shapes local practice. These MD counties record the most:
Source: NHTSA Fatality Analysis Reporting System, 2020–2022. Counts crashes where police recorded that a driver had been drinking, which is narrower than the federal 0.08 measure and therefore understates the real figure. Maryland runs above the national share.
What it costs to get driving again in Maryland
Maryland is one of the few states that publishes what a provider may charge, so a quote here is checkable against the regulation rather than against another quote.
The two clocks in Maryland
The court case and the licensing case run separately. The licensing side moves first, and in the strictest states the window to request a hearing is measured in days — it runs whether or not you have hired anyone.
Maryland cities
The county that hears your case is set by where the stop happened, and local practice differs across the state.
DUI questions in Maryland
Is it called DUI or DUI in Maryland?
Maryland uses DUI — driving under the influence. You will also see DWI, drunk driving used for the same thing. The label follows the state, not the seriousness of what happened, so paperwork from elsewhere may say something different about identical conduct.
What is the legal limit in Maryland?
0.08% for drivers 21 and over, as in every state except Utah, which sits at 0.05%. Below the limit you can still be charged if an officer documents impairment. The reading that triggers the interlock here is a separate number: 0.025% — the MVA states the car will not start above that reading; missed service visits, tampering and bypass attempts also count as violations
How long does the interlock stay on after a first offense in Maryland?
Set on referral by the MVA, a court or an administrative law judge; a repeat offender within five years faces a year of suspension or a year in the program, then a further restricted year The program is run by Maryland Motor Vehicle Administration.
Can you get a DUI on a horse or a bicycle in Maryland?
The answer is in whether the statute says “vehicle” or “motor vehicle”. Where it says vehicle, no engine is needed and the charge can reach a bike or a horse; where it says motor vehicle, it cannot. This is one of the most searched questions in the whole subject and one of the most confidently answered wrongly — the wording of your own state decides it.
A second DUI here →A first DUI here →When a DUI is a felony in Maryland →
When a charge becomes a felony → The test and the refusal → SR-22 and FR-44 →
Attorney advertising. InterlockDeviceNearMe is not a law firm, does not practice law, and does not give legal advice. Nothing here creates an attorney-client relationship. Requesting a consultation connects you with an independent attorney or a legal referral service, who decide separately whether to take your case. Case outcomes depend on facts we do not know, and no result is ever promised. Deadlines in DUI cases are short and vary by state — speak to a licensed attorney in your state before relying on anything you read here.