Required aisles must be kept how at all times?

Aisles in an indoor place of assembly are critical components for ensuring safety and facilitating the free movement of people. Keeping aisles clear and unobstructed is essential for several reasons. First, it allows for safe and quick evacuation in case of emergencies, such as a fire or other hazardous situations, where every second counts. If aisles are blocked, it can lead to confusion, panic, and potentially severe injuries during an evacuation.

Moreover, unobstructed aisles create a safe environment for everyday use, as they enable people to move about without the risk of tripping or falling over obstacles. Compliance with this requirement reflects a commitment to safety regulations and standards designed to protect the lives of occupants and attendees.

In contrast, the other options do not contribute positively to safety. For example, aisles decorated with signage could still be blocked, thus negating their purpose, while marking with floor tape is a helpful way to delineate space but does not ensure that the aisles remain clear. Obstructing aisles for safety reasons is contradictory, as it creates risks rather than mitigating them. Keeping aisles clear and unobstructed is an essential safety practice that protects everyone in the assembly space.