DUI and DWI law concerns offenses involving operating a vehicle while impaired by alcohol or other substances. The terminology varies by jurisdiction — common terms include driving under the influence and driving while intoxicated — but the underlying concern is the same: alleged impaired driving.
These cases are distinctive because they typically combine a criminal matter with a separate process affecting a person's driving privileges. A single incident can lead to both a criminal case and a separate administrative proceeding concerning a driver's license, and these can move on different tracks with different rules and timelines. The evidence often involves observations by officers, field sobriety procedures, and chemical testing of breath or blood, and a significant part of the defense can focus on how that evidence was gathered and whether testing was conducted properly.
The usual protections of criminal law apply, including the presumption of innocence, the government's burden of proof, and the right to a lawyer. The specific rules, procedures, and consequences in this area vary considerably from place to place.
For a non-lawyer, the key points are that an impaired-driving charge can have both criminal and license-related consequences, that some related deadlines can be short, and that the details of testing and procedure often matter. People charged with a DUI or DWI commonly consult a lawyer promptly to understand both sides of the matter.
