Washington Defensive Driving Knowledge Practice Test

In Washington, it is illegal for adults aged 21 and older to drive with a blood alcohol concentration (BAC) of 0.08% or higher. This legal limit is established to ensure the safety of all road users, as higher levels of alcohol significantly impair a driver's judgment, coordination, and reaction times. Driving under the influence of alcohol can lead to serious accidents, injuries, and fatalities, which is why the legal threshold is set at this level.

The choice reflecting 0.08% aligns with national standards as well, as many states have adopted similar limits to discourage impaired driving. Understanding this limit is crucial for responsible alcohol consumption and safe driving practices.