New Hampshire Drivers Practice Test 2025 – Complete Exam Prep

In New Hampshire, the legal blood alcohol concentration (BAC) limit for drivers over the age of 21 is .08%. This standard is consistent with laws in many other states, which recognize that this level indicates a person's ability to operate a vehicle is impaired. BAC levels at or above .08% are considered to significantly increase the risk of accidents, as alcohol affects judgment, coordination, and reaction times.

Choosing an answer like .05% would suggest a lower threshold, which does not apply to those over 21 under current New Hampshire law; that level is often associated with different regulations, such as for commercial drivers or those under the legal drinking age. A .10% level would indicate a higher degree of intoxication, which could lead to more severe penalties. A .12% BAC would be even more severe and not align with the established legal limit. Hence, the .08% threshold represents the legal limit where a presumption of intoxication occurs for drivers over 21 in New Hampshire.