0.08% for drivers 21+, 0.04% for commercial drivers, and 0.00-0.02% for drivers under 21.
By driving, you consent to chemical testing. Refusing can result in automatic license suspension.
Drivers under 21 face zero tolerance laws with much lower BAC limits and severe penalties.
DUI penalties include license suspension, fines, jail time, and mandatory education programs.
What is the legal BAC limit for drivers 21 and older?
0.08% in all 50 states.
What is the BAC limit for drivers under 21?
0.00% to 0.02% depending on the state - zero tolerance policies apply.
What happens if you refuse a breathalyzer test?
Automatic license suspension under implied consent laws, typically for 6 months to 1 year.
Master all traffic signs for your DMV test. Learn regulatory, warning, and guide signs with visual examples and practice questions.
Understand who has the right of way in every driving situation. Learn intersection rules, yielding, and priority at stops.
Know the speed limits for every road type. Learn default limits, school zones, and when to reduce speed for safety.
Master parking regulations including distances from hydrants, curb colors, parallel parking, and hill parking techniques.
Learn what road markings mean - lane lines, edge lines, crosswalks, and special lane markings explained.
Essential defensive driving techniques, following distance rules, and how to drive safely in all conditions.
What to do in emergencies - brake failure, skidding, tire blowouts, and accident procedures explained.
When and how to use headlights, high beams, and fog lights. Learn the rules for safe nighttime driving.
Master turning techniques, U-turns, lane changes, and signaling requirements for your DMV test.
Learn highway merging, lane usage, passing rules, and safe interstate driving techniques.
Know the rules for school zones, when to stop for school buses, and how to keep children safe.
Master parallel parking for your DMV road test. Step-by-step instructions, common mistakes, and practice tips.
Learn how to execute a perfect 3-point turn (K-turn) for your driving test with detailed instructions.
Know when to stop at railroad crossings, warning signs, and safety rules for trains on the DMV test.
Understand blind spots, proper mirror adjustment, and how to safely check before changing lanes.
Learn highway merging techniques, acceleration lane usage, and yielding rules for safe lane entry.
How to navigate roundabouts safely - yielding rules, lane selection, and signaling requirements.