What does 'shelter in place' instruct building occupants to do during an emergency?

The instruction to 'shelter in place' directs building occupants to remain indoors at their current location during an emergency. This response is often recommended when the situation outside poses a greater risk than staying inside, such as during hazardous material spills, severe storms, or if there is an active threat nearby.

By remaining in their current location, occupants are able to avoid potential dangers outside and can take steps to secure their environment, such as sealing windows and doors and turning off ventilation systems if necessary. This action helps protect individuals from the dangers present outside while allowing emergency responders to manage the situation effectively.

In contrast, the other choices involve actions that may increase risk during certain emergencies. For example, evacuating immediately can expose people to hazards they might avoid by sheltering in place, and moving to higher floors is not always a safe or advisable response depending on the nature of the emergency. Similarly, assembling at the building exit may not be appropriate if leaving the building could put occupants in danger.