Once a person reaches his or her peak BAC, it will drop at a rate of about how much per hour?

The peak Blood Alcohol Concentration (BAC) for an individual typically begins to decline after reaching its highest point. The average rate at which BAC decreases is approximately 0.015 grams per deciliter per hour. This rate can vary slightly among individuals based on factors like weight, metabolism, and drinking habits.

Understanding this decrease is crucial in contexts such as sobriety assessments and legal considerations related to driving under the influence. While other rates may exist in specific circumstances or for certain individuals, 0.015 is the widely accepted average used by law enforcement and medical professionals to approximate how quickly the effects of alcohol wear off.