What is the maximum allowable blood alcohol concentration (BAC) for a commercial driver in Arizona?

The maximum allowable blood alcohol concentration (BAC) for a commercial driver in Arizona is set at 0.04%. This limit is significantly lower than that for non-commercial drivers, recognizing the increased responsibility and potential hazards faced by commercial drivers due to the size and weight of their vehicles. Maintaining a BAC at or below this threshold helps ensure public safety on the roads.

In the context of commercial driving, this standard aligns with federal regulations which aim to minimize the risks associated with alcohol consumption while operating heavy machinery or transporting passengers or goods. Understanding this limit is crucial for commercial drivers, as exceeding it can lead to serious legal consequences, including license suspension and fines, in addition to compromising their ability to operate safely.