Which of the following is NOT an endorsement that can be added to a driver's license?

The correct choice highlights an important aspect of driver's license endorsements. Endorsements are additional authorizations that allow a driver to operate specific types of vehicles beyond the standard class of their license.

For instance, a motorcycle endorsement allows a licensed driver to legally operate motorcycles. A taxi endorsement permits a driver to operate vehicles for hire, specifically taxis, under regulations that pertain to that profession. A commercial endorsement is essential for drivers wishing to operate commercial vehicles, which includes a wide range of larger vehicles used for business purposes.

In contrast, "Heavy Equipment" is not recognized as a specific endorsement that can be added to a driver's license. Instead, operating heavy equipment typically requires different certifications or licenses that are specific to the type or use of machinery involved (e.g., construction equipment). This is why heavy equipment is not part of standard driver's license endorsements, distinguishing it from the other options that serve specific and regulated driving purposes.