Which type of occupancy would most likely utilize textual notification appliances?

Textual notification appliances are primarily used in environments where clear, direct communication is essential for safety and compliance, such as in assembly occupancies. This type of occupancy includes large gatherings of people in venues like theaters, auditoriums, and sports arenas, where the ability to convey instructions or alert individuals to an emergency through visible means is critical.

In these settings, auditory notifications alone may not suffice, especially if there is high ambient noise or if individuals are unable to hear alarms due to the structure's design or crowd dynamics. Textual notifications provide a visual method to convey important messages that can be easily understood by diverse groups of people, including those who may be hearing-impaired or non-native speakers.

Moreover, these notification appliances can help ensure orderly evacuations by displaying clear exit routes or specific instructions tailored to different emergency scenarios, enhancing overall safety for the occupants. This necessity makes textual notification appliances most suitable for assembly occupancies compared to other options, which may not require such specialized communication methods.