Final answer:
If caught with a BAC in the "warn range" (0.5-0.8) for the first time, the immediate suspension is for 72 hours. Legal limits for BAC are enforced to prevent impaired driving.
Step-by-step explanation:
If you are caught with a blood-alcohol concentration in the "warn range" (0.5-0.8) and it is your first offense, you will immediately be suspended for 3 days or 72 hours. Blood-alcohol concentration (BAC) levels, which measure alcohol intoxication, are taken very seriously when it comes to operating a vehicle due to the impairing effects of alcohol on tasks requiring skill and judgment. In the United States, the legal limit for intoxication is a BAC of 0.08. Therefore, being caught in the warn range indicates that you are under the legal limit for being considered legally intoxicated but still above the acceptable limits for operating a vehicle safely.
The legal limits are put in place to discourage driving after consuming alcohol and to reduce the potential risk of accidents. It should be noted that the rate at which the liver metabolizes alcohol is about 15 mg/dL per hour; hence understanding personal limits and the time it takes to sober up is crucial for responsible drinking habits.