Final answer:
The question deals with DUI laws in Japan and the U.S., using PS2 Shurman's BAC of 0.22% as an example of exceeding legal BAC limits for DUI. Alcohol metabolism rates are significant when considering recovery to sobriety and BAC levels are measured using a Breathalyzer device.
Step-by-step explanation:
The subject in question pertains to the varying blood alcohol content (BAC) levels that define alcohol intoxication and the legal limit for driving under the influence (DUI) in different jurisdictions. In Japan, a BAC of 0.03% is considered the threshold for DUI, whereas in the United States, the legal limit is 0.08%. PS2 Shurman's BAC of 0.22% means she exceeded the legal limit for both Japanese and U.S. law, thereby committing a DUI offense in both countries.
The Breathalyzer device is utilized to measure a person's BAC based on the ethanol concentration in their breath. This is done through the oxidation of ethanol by the dichromate ion. The effects of alcohol, such as acute intoxication, unconsciousness, and potentially death, correspond to higher BAC levels.
It is important to note that alcohol metabolism is a process that occurs at a relatively constant rate, and the body metabolizes alcohol at about 15 mg/dL per hour. Understanding this rate is crucial for determining the timeframe needed for a person to sober up from a legally intoxicated state.