Maryland treats Driving Under the Influence and Driving While Impaired as separate offenses with different penalties, different point values, and different consequences before the MVA. Most people use DUI and DWI interchangeably, but the distinction matters from the moment you’re charged. The specific offense on the paperwork, the evidence behind it, and a parallel license process can each shape what happens next.
Under Maryland Transportation Article, Section 21-902, both offenses are defined by statute. Our attorneys at MacDonald Law Office, LLC are located across from the Salisbury District Court, and as former prosecutors, Andrew and Cynthia MacDonald know how closely the details of a stop, a test, and a charging document can matter to the outcome.
The Core Difference Between DUI & DWI in Maryland
The central difference is the degree of impairment the State alleges. Section 21-902(a) addresses driving under the influence of alcohol (DUI), while Section 21-902(b) addresses driving while impaired by alcohol (DWI). DUI alleges a higher level of impairment. That doesn’t make a DWI charge minor. Prosecutors can draw on the full picture, including driving behavior, officer observations, statements, field sobriety tests, and chemical test results.
A blood alcohol concentration of 0.08 or higher is over Maryland’s legal limit and can support a BAC per se allegation. BAC per se means the test result itself is alleged to establish the offense, rather than requiring the court to infer impairment from behavior alone. Even so, a chemical result is one piece of evidence, not the whole case.
How Maryland Defines Drug Impairment
Maryland also prohibits driving while impaired by drugs or by a combination of drugs and alcohol when the substance affects a person’s ability to drive safely. A valid prescription, lawful possession, or medical purpose doesn’t automatically resolve the allegation. The legal question is whether the substance impaired driving ability under the circumstances.
Drug-related cases may involve officer observations, statements, blood test results, prescription information, or allegations about the combined effects of alcohol and medication. A person may also be charged with more than one impaired driving offense arising from the same stop when the State alleges alternative theories. The final disposition depends on the evidence admitted, the applicable law, and the facts of the individual case.
DUI & DWI Penalties Compared
For a first offense, Maryland law sets substantially different maximum criminal penalties for the two charges. These are statutory maximums, not predictions of what will happen in any particular case.
Key first-offense maximums:
- DUI: Up to one year of imprisonment and a fine of up to $1,200.
- Alcohol-Based DWI: Up to two months of imprisonment and a fine of up to $500.
Penalties increase when a person has prior impaired driving convictions or when aggravating circumstances apply, such as transporting a minor. Drug-related allegations may carry different consequences under the applicable provisions of Maryland law.
Conviction Points & License Consequences
The Maryland Motor Vehicle Administration handles license consequences separately from criminal court. The MVA assigns 12 points for a DUI conviction and 8 points for a DWI conviction. Depending on the driver’s record and the MVA process, those totals can lead to suspension or revocation. An ignition interlock device may also become relevant in some cases. License consequences carry their own notices, deadlines, eligibility rules, and administrative decisions, none of which are resolved by the criminal court proceeding.
The Criminal Case & the MVA Case Run Separately
A criminal case and an MVA action move forward independently of each other. The criminal case addresses whether the State can prove an offense. The MVA case concerns driving privileges and can be triggered by a failed or refused chemical test under Maryland’s implied consent law, which provides that anyone who drives in Maryland is considered to have agreed to chemical testing under the conditions set by state law.
Many of the same facts matter in both proceedings: the reason for the stop, video footage, officer observations, field sobriety tests, the timing of the chemical test, and whether testing procedures were followed. A favorable criminal outcome doesn’t automatically eliminate every MVA consequence, and an MVA decision doesn’t determine guilt in criminal court.
What to Do After a DUI or DWI Arrest in Salisbury
Start by preserving every document connected to the stop. Keep the citation, charging papers, test result paperwork, MVA notice, and anything provided at release in one place. Write down what you remember while the details are fresh: where you were driving, what the officer said, and what tests were requested.
Don’t assume a single BAC number answers every question. A prompt review can identify upcoming court dates, potential MVA deadlines, and what the allegations actually cover. For those facing an arrest in Salisbury, Ocean City, Berlin, Wicomico County, or Worcester County, our former-prosecutor background allows us to examine the allegations from more than one angle and keeps you informed about the decisions in front of you.
Why the Distinction Matters
DUI and DWI aren’t interchangeable labels under Maryland law. The exact charge, the available evidence, any prior record, and the separate MVA process can each shape the immediate choices a driver faces. We can provide direct guidance on the charges, court paperwork, and any MVA issues specific to your case. To discuss an impaired driving arrest and the deadlines that may apply, contact our office at (410) 348-7809.