What is the legal blood alcohol concentration (BAC) limit for drivers operating a commercial passenger vehicle?

The legal blood alcohol concentration (BAC) limit for drivers operating a commercial passenger vehicle is indeed 0.04% or lower. This lower threshold reflects the increased responsibility and potential consequences of operating larger vehicles that carry passengers. Federal regulations specifically state that commercial drivers must maintain a BAC that is below this limit to ensure public safety.

Drivers of commercial motor vehicles are held to stricter standards than non-commercial drivers. In many states, including Texas, a BAC of 0.04% or greater is considered driving under the influence (DUI) for commercial drivers, and this can lead to severe penalties, including loss of their commercial driver’s license (CDL).

The other options represent BAC limits that apply to different situations, such as personal driving or less regulated vehicle operation, but they do not pertain to the specific regulations governing commercial passenger vehicle operation. Understanding this limit is critical for commercial drivers to ensure they remain compliant with both federal and state laws, thereby maintaining safety for themselves, their passengers, and other road users.