What is the threshold for impairment in ARS 28-1381A.1?

In Arizona, ARS 28-1381A.1 pertains to driving under the influence laws and establishes the legal threshold for impairment based on blood alcohol concentration (BAC). The correct choice refers to the range of 0.05 to 0.079, which is significant because it indicates that individuals can be considered impaired even if their BAC is below the commonly known limit of 0.08. This provision means that drivers showing any signs of impairment will face legal repercussions at this lower threshold, emphasizing the state’s strict stance on drinking and driving.

This understanding is crucial for evaluating a driver's fitness to operate a vehicle, as impairment doesn’t only depend on reaching a certain BAC but also encompasses any indication that a driver’s abilities are compromised. This approach alertly identifies the risks associated with alcohol consumption, even at lower levels, reinforcing safe driving practices.