alarm
alert
allowed
building
case
caution
danger
direction
do
elevator
emergency
escape
evacuation
exit
fire
flame
forbidden
hazard
help
icon
illustration
information
isolated
label
lift
no
not
notice
office
people
person
prohibited
prohibition
red
restriction
risk
safety
security
sign
signal
stairs
stairway
stop
symbol
transport
urgency
use
warning
way