In every state except Utah, a driver aged 21 or older is legally impaired 'per se' at or above what blood alcohol concentration?
- 0.02 percent
- 0.10 percent
- 0.08 percent
- 0.15 percent
Show the answer
C. 0.08 percent
All states but Utah set the per se limit for adult non-commercial drivers at 0.08 percent (Utah uses 0.05). The 0.10 figure is an older limit that no state uses today.
Reference: 23 U.S.C. 163; state DUI statutes
An oncoming driver fails to dim blinding high beams at night. Where should you look?
- Straight ahead at the oncoming lights
- Down at your instrument panel
- Into your inside rear-view mirror
- Toward the right edge of your lane
Show the answer
D. Toward the right edge of your lane
Looking toward the right edge line or the edge of the road lets you keep your lane while avoiding the glare. Staring at the lights blinds you for several seconds, and flashing your own high beams back only blinds both drivers.
Reference: State driver's manual, night driving
Several vehicles approach an all-way stop from different directions at different times. Who goes first?
- The vehicle that is travelling on the wider street
- The vehicle that is going straight ahead rather than turning left
- The vehicle that reached the intersection and stopped first
- The vehicle that has the most passengers on board
Show the answer
C. The vehicle that reached the intersection and stopped first
At an all-way stop, drivers go in the order they arrived after each makes a full stop. Street width and passenger count have no bearing on right of way.
Reference: Uniform Vehicle Code, Chapter 11 (Rules of the Road); state driver's manual