When is it illegal to use a cellphone while driving in Illinois?

In Illinois, it is illegal to use a cellphone while driving unless you are using a hands-free device. This law is designed to promote safer driving practices by reducing distractions that can lead to accidents. The intent is to keep drivers focused on the road while still allowing them to communicate through hands-free technology, which keeps their hands on the wheel and their eyes on the road.

The other options do not accurately reflect Illinois law. Using a cellphone is not restricted only to commercial vehicle drivers; it's a broader mandate for all drivers. The law does not prohibit cellphone use entirely at all times but specifically allows for hands-free communication. Furthermore, the prohibition on cellphone use is not limited to night hours; it applies any time a driver is on the road without a hands-free device. Thus, the emphasis on hands-free devices is crucial to understanding when cellphone use is legal while driving in Illinois.