BAC = blood alcohol concentration
- DWI: Driving While Intoxicated; .08 BAC or higher or other evidence of intoxication. For drivers of commercial motor vehicles, .04 BAC or other evidence of intoxication.
- Aggravated DWI: Aggravated Driving While Intoxicated: .18 BAC or higher.
- DWAI/Alcohol: Driving While Ability Impaired (by alcohol); more than .05 BAC to .07 BAC, or other evidence of impairment. For drivers of commercial motor vehicles who are under age 21, .02 BAC or other evidence of impairment.
- DWAI/Drug: Driving While Ability Impaired by a single Drug other than alcohol.
- DWAI/Combination: Driving While Ability Impaired by a Combined Influence of Drugs or Alcohol.
- Chemical Test Refusal: A driver who refuses to take a chemical test (normally a test of breath, blood or urine) can receive a driver license revocation of at least one year (18 months for a commercial driver) and must pay a $500 civil penalty ($550 for a driver of commercial vehicles) to apply for a new driver license. A driver who refuses a chemical test during the five years after a DWI-related charge or previous refusal will have their driver license revoked for at least 18 months (permanent for a commercial driver) and must pay a $750 civil penalty to apply for a new driver license. If the driver is under age 21, and refuses a chemical test during the five years after a DWI-related charge or previous refusal, they will have their driver license revoked for at least one year or until age 21, whichever is longer and must pay a $750 civil penalty to apply for a new driver license.
- Zero Tolerance Law: A driver who is less than 21 years of age and who drives with a .02 BAC to .07 BAC violates the Zero Tolerance Law.