What does the term "no zone" refer to in driving?

The term "no zone" specifically refers to the areas around a vehicle where visibility is limited, particularly in relation to larger vehicles such as trucks and buses. These zones are critical for safe driving, as they denote areas where a driver may not be able to see other vehicles, pedestrians, or cyclists. Understanding these zones helps drivers be more cautious and aware of their surroundings, especially when changing lanes or making turns.

This awareness is vital to prevent accidents, as a driver in a larger vehicle has significant blind spots that can obscure the view of smaller vehicles nearby. Recognizing and respecting "no zones" not only improves personal safety but also enhances the safety of others on the road. The other options, while related to vehicle operation, do not capture the specific meaning of "no zone" in the context of visibility and driving safety.