DUI/DWI theory essentials.
BAC
Blood alcohol concentration.
Legal limit (adult)
Often 0.08% BAC in many regions.
Zero tolerance
Lower/zero BAC for underage drivers.
Implied consent
Agree to testing by driving privilege.
Impairment
Alcohol/drugs reduce judgment and reaction.
Open container
Alcohol open in passenger area often illegal.
Hangover myth
You can still be impaired next day.
One drink myth
Impairment starts before 'feeling drunk'.
Fatigue + alcohol
Combined impairment multiplies risk.
Prescription drugs
Can impair; check labels.
Refusal consequences
License suspension often follows test refusal.
Designated driver
Sober driver plan.
Ignition interlock
Breath device required after some DUI.
Public transport alternative
Plan rides before drinking.