What is the legal limit for blood alcohol concentration (BAC) for drivers over 21 in Massachusetts?

In Massachusetts, the legal limit for blood alcohol concentration (BAC) for drivers over 21 years of age is set at 0.08%. This means that a driver is considered legally impaired and subject to arrest for operating under the influence if their BAC is at or above this level. The law establishes this limit to ensure road safety by reducing the risk of accidents caused by impaired driving.

When a driver's BAC reaches 0.08% or higher, it indicates that their ability to operate a vehicle is significantly impaired, increasing the likelihood of engaging in risky behaviors or making poor decisions on the road. This standard is consistent with regulations in many other states, emphasizing a unified approach to address the dangers associated with drinking and driving.

The thresholds presented in the other choices, while indicative of varying degrees of impairment, do not reflect the legal limit for driving under Massachusetts law for adults. Understanding this legal BAC limit is essential for drivers to remain compliant with state regulations and prioritize safety.