accident
alarm
alert
black
brake
button
collision
computer
concept
design
error
filled
flat
forced stop
glyph
graphic
hazard
icon
illustration
importance
important
indicator
information
isolated
laptop
message
networks
new
notification
occasion
pointer
pop
pop up
priority
risk
safety
security
sign
silhouette
social
solid
stencil
stop
symbol
threat
up
warning
web