What is the allowable Blood Alcohol Concentration (BAC) for CDL drivers in Louisiana?

The allowable Blood Alcohol Concentration (BAC) for Commercial Driver’s License (CDL) holders in Louisiana is 0.04%. This lower threshold is in place because commercial drivers have a higher responsibility when operating large vehicles, which can be significantly more dangerous than regular passenger vehicles if operated under the influence.

Maintaining a BAC at or below 0.04% helps ensure that CDL drivers can perform their duties safely, as even small amounts of alcohol can impair judgment and reaction times. This standard reflects the stricter regulations that apply to commercial driving as opposed to personal driving, where the legal limit is generally higher. Therefore, the option stating 0.04% or more is inconsistent with the regulations, highlighting the importance of understanding and complying with laws specific to driving commercial vehicles.