When is it illegal to use a cell phone while driving in Wyoming?

The correct answer highlights that it is illegal to use a cell phone while driving in specific situations, particularly in construction zones and for drivers under 18. This regulation is designed to enhance safety by reducing distractions for young and inexperienced drivers who may already be in a critical learning phase. Construction zones are also high-risk areas where driver focus is crucial to navigate safely among workers, equipment, and changing traffic patterns. These rules emphasize the need for increased caution in environments where distractions can lead to accidents.

The other options represent scenarios where it's permissible or clarifying uses that are not strictly regulated under Wyoming law. For instance, using a cell phone while stopped at a traffic signal isn't typically illegal, as the vehicle is not in motion. Similarly, using a phone solely for navigation may be allowed if it is hands-free, depending on the laws and whether the driver is of legal age. Therefore, the focus on age and specific locations underscores the need for heightened awareness in the critical driving stages and hazardous areas.