When is it illegal to use a cell phone while driving a commercial vehicle?

Using a cell phone while driving a commercial vehicle is illegal any time the vehicle is in motion. This regulation is in place to minimize distractions for commercial drivers, who are responsible for operating larger and heavier vehicles. The risk of accidents increases significantly when drivers are distracted by cell phones, which can involve not only making calls but also texting or using apps.

The intent behind this law is to ensure that commercial drivers remain focused on the road and their immediate surroundings, given their responsibility for public safety. This includes not just formal phone conversations but any interaction with a cell phone that could divert attention from driving.

In contrast, options that suggest it is only illegal under certain circumstances, such as when making a call, when the vehicle is stopped, or only in bad weather, do not align with the comprehensive regulations regarding cell phone use in commercial driving. These options miss the overarching principle that the prohibition is in effect as long as the vehicle is in motion, regardless of the conditions or specific tasks associated with cell phone use.