2017
accident
alarm
alert
attention
background
beware
black
careful
caution
color
damage
danger
dangerous
error
exclamation
hazard
hazardous
icon
illustration
important
industry
information
isolated
label
mark
message
notice
pictogram
point
prevent
risk
road
safety
secure
security
set
shadow
sign
stop
symbol
threat
traffic
triangle
triangular
warning
web
white
yellow