Final answer:
Zero Tolerance is the policy prohibiting drivers under 21 from having any alcohol in their systems.
Step-by-step explanation:
Zero Tolerance policies are designed to deter underage drinking and driving by strictly prohibiting any presence of alcohol in drivers under the age of 21. These laws recognize the increased risks associated with alcohol consumption among younger drivers and aim to prevent accidents and fatalities. Unlike the legal limit for adult drivers, which typically allows a small blood alcohol concentration (BAC) level, Zero Tolerance strictly enforces a BAC of 0.00% for underage drivers.
This approach emphasizes the importance of abstinence from alcohol while driving among those who are not of legal drinking age. The rationale behind Zero Tolerance is grounded in safeguarding the lives of young drivers, passengers, and other road users by eliminating any potential impairment due to alcohol. Ultimately, this policy aims to promote responsible driving habits and curb the dangers associated with underage drinking and driving.