Which BAC range is considered acceptable for not recommending the SFST?

The BAC range considered acceptable for not recommending the Standardized Field Sobriety Test (SFST) is below 0.05%. This threshold is significant because most studies indicate that at BAC levels below 0.05%, individuals typically retain sufficient cognitive and motor function capabilities, which means they are less likely to be impaired by alcohol. As such, law enforcement may determine that conducting the SFST is unnecessary for drivers with a BAC in this range, as they are deemed to be driving safely and within legal limits.

In contrast, other BAC levels such as 0.05%, 0.08%, and 0.10% are associated with increasing impairment and are more likely to result in recommendations for the SFST. A BAC of 0.08% is the legal limit in many jurisdictions where drivers are presumed to be impaired and may face legal consequences. Thus, the focus on the below 0.05% range prioritizes the recognition of drivers who are not likely to pose a risk while driving.