Colorado CDL Practice Test 2025 - Free Commercial Driver’s License Practice Questions and Study Guide

A common restriction for a CDL driver with a Blood Alcohol Concentration (BAC) above the legal limit is the loss of their Commercial Driver’s License (CDL) for one year. When a driver is caught operating a commercial vehicle with a BAC of 0.04% or higher, they face strict penalties that are designed to maintain safety on the roads. The one-year disqualification emphasizes the seriousness with which these violations are treated, as it reflects the responsibility required of individuals holding a CDL.

Maintaining safety is paramount in the commercial driving industry, which is why the consequences for impaired driving are more severe than those for non-commercial drivers. This reinforces the importance of sober driving as essential for protecting not only the driver but also the general public. Other consequences may exist, such as mandatory education programs or financial repercussions like increased insurance premiums, but the direct and immediate impact of losing the CDL for a year serves as a critical deterrent against drunk driving in commercial contexts.