What is the maximum blood alcohol concentration (BAC) allowed for CDL drivers in Colorado?

For CDL drivers in Colorado, the maximum allowable blood alcohol concentration (BAC) is 0.04%. This regulation is designed to ensure safety on the roads, as commercial drivers operate larger vehicles that require greater skill and attention. A lower BAC limit reflects the higher responsibility that comes with driving a commercial vehicle, as impaired driving can lead to more serious accidents due to the size and weight of these vehicles.

In contrast, the higher limits seen for non-commercial drivers, such as 0.08% for most adult drivers, are not applicable to those holding a CDL. The stricter standard reinforces the importance of sobriety for individuals who are operating commercial vehicles, which can have significant consequences not only for the driver but also for other road users. This limit also underscores the understanding that even small amounts of alcohol can impact driving abilities, particularly in a professional context.