What factors can disqualify someone from obtaining a CDL?

There are several reasons why you may be disqualified from obtaining a CDL. These include being convicted of driving under the influence of alcohol or a controlled substance, refusing to take an alcohol test, leaving the scene of an accident, driving a commercial vehicle without a CDL, or being responsible for negligent driving resulting in death. Additionally, citations for texting while driving and serious traffic violations such as reckless driving, improper lane changes, weaving between traffic, failure to check blind spots, not signaling when turning, frequent lane changes in heavy traffic, passing in restricted lanes, and driving too close to other vehicles can also disqualify you from obtaining a CDL.