Final answer:
A BAC level of 0.08% by volume or over can result in a driver's license suspension as per the Highway Traffic Act (HTA). This is the legal limit for being considered under the influence in most US states.
Step-by-step explanation:
A driver's license suspension under the Highway Traffic Act (HTA) can occur at a BAC level of 0.08% by volume or over. This is the threshold at which a driver is considered to be legally under the influence in almost all US states. The effects of alcohol can be severe, with higher BAC levels leading to acute intoxication (>0.20%), unconsciousness (about 0.30%), and even death (about 0.50%). The Breathalyzer is commonly used to measure the ethanol concentration in the breath, reflecting the BAC.
Drivers need to understand the risks of drinking and driving, including the potential for impaired judgment and the legality of their actions. The BAC level is a critical factor in assessing intoxication for legal purposes, with levels above 0.08% leading to legal implications such as license suspension.