alert
art
attention
beware
black
care
careful
caution
danger
dangerous
equilateral
exclamation
exclamation mark
general
general warning
graphic
hazard
hazardous
icon
illustration
information
international
isolated
mark
no
notice
pictogram
restriction
risk
risky
road
rule
safety
security
shape
sign
signal
signboard
symbol
traffic
transportation
triangle
triangular
warning