If an adult driver is found to be driving with a blood alcohol concentration (BAC) of 0.08% or above, what will they be charged with?

A driver with a blood alcohol concentration (BAC) of 0.08% or above is considered to be operating under the influence (OUI) in Massachusetts. This legal threshold is established to deter impaired driving, as evidence indicates that higher levels of alcohol significantly impair a driver's ability to operate a vehicle safely. The OUI charge reflects the serious nature of driving while impaired, as it poses a threat not only to the driver but also to other road users.

The other options relate to offenses that do not specifically address impaired driving due to alcohol. Driving without a license pertains to operating a vehicle without a valid license, reckless driving focuses on driving behavior that demonstrates a willful disregard for the safety of persons or property, and speeding relates to driving beyond the posted speed limits. While these actions are violations, they do not involve alcohol impairment, which is the central issue in this scenario. Thus, the appropriate charge for a driver found with a BAC of 0.08% or higher is indeed operating under the influence (OUI).