What is the legal blood alcohol concentration (BAC) limit for driving in most states?

• A. 0.05%
• B. 0.08%
• C. 0.10%
• D. 0.12%

Answer: (B)

The legal blood alcohol concentration (BAC) limit for driving in most states is set at 0.08%. This threshold has been established to provide a clear and uniform standard for law enforcement to assess impairment due to alcohol consumption. At or above this concentration, individuals are considered legally impaired, which significantly increases the risk of accidents and dangerous driving behavior.

This standard is supported by research linking higher BAC levels to greater levels of impairment in motor skills, judgment, and reaction times. As such, states have uniformly adopted 0.08% as a way to protect public safety on the roads. Lower BAC levels, such as 0.05% or 0.10%, may be applicable in different contexts or jurisdictions, but they do not represent the general legal limit across the majority of states for standard drivers. Similarly, a BAC of 0.12% is above the legal limit and increases the potential for legal action and penalties against drivers with such a concentration.