A commercial driver with a class A or B license cannot drive with a BAC of what percentage or higher?

A commercial driver with a Class A or B license is required to adhere to stricter standards regarding blood alcohol concentration (BAC) compared to non-commercial drivers. The legal limit for BAC for these drivers is set at 0.04%. This means that if their BAC is at or above this level, they are considered legally impaired and it is illegal for them to operate a commercial vehicle.

This regulation is in place to ensure the safety of all road users, as commercial vehicles can be significantly larger and more hazardous than standard passenger vehicles. The lower threshold reflects the responsibility that commercial drivers bear, given that they often transport passengers or hazardous materials. While the general legal limit for alcohol consumption while driving is 0.08% for non-commercial drivers, the more stringent requirement for those holding a Class A or B license emphasizes the importance of maintaining a higher standard of sobriety in the professional driving industry.