Which license feature distinguishes a provisional license for those under the age of 21?

The distinguishing feature of a provisional license for individuals under the age of 21 is the printed phrase "UNDER 21." This phrase serves as an important identification element, allowing law enforcement, businesses, and others to quickly ascertain that the holder of the license is not yet of legal drinking age. It plays a critical role in ensuring that age restrictions related to alcohol purchases and consumption are upheld.

This feature is particularly important in promoting public safety and responsible behavior among younger, less experienced drivers. The clear labeling helps to enforce the regulations surrounding alcohol consumption and provides immediate recognition for the age-related restrictions that apply to individuals holding such licenses.