accident
alarm
alternative
arrow
assistance
blurred
board
building
burning
calamity
communication
crisis
damage
danger
direction
disaster
display
emergency
entrance
escape
evacuate
evacuation
exit
fire
green
guidance
guide
hazard
horizontal
human
icon
information
instruction
lot
motion
parking
protection
representation
rescue
risk
safety
save
security
sign
symbol
underground
urgent
warning
white
yellow