In Maine, a blood-alcohol content at or above which percentage is considered prima facie evidence of Operating Under the Influence?

In Maine, a blood-alcohol content (BAC) of 0.08% or higher is established as prima facie evidence of operating a vehicle under the influence (OUI). This legal standard means that if a driver's BAC reaches or exceeds this level, it is presumed they are impaired and are operating a vehicle unlawfully.

The law is based on extensive research indicating that at this level of alcohol concentration, a person's ability to operate a vehicle safely is significantly impaired. Consequently, law enforcement uses this threshold as a clear and enforceable limit to help maintain road safety.

Other BAC levels mentioned do not meet this legal threshold for prima facie evidence; therefore, while lower BAC percentages may indicate some level of impairment, they do not automatically lead to a presumption of guilt in the same manner as 0.08%.