PNG SVG PSD EPS MORE
Web
Flat
General
mark, Punctuation, careful
Black
512x512
Signs
Cumulus
Warning Sign, Attention, danger
Health
exclamation, danger, triangle
Social
Circle, signs, marks
Energy
warning, Radioactivity, danger
WebDev SEO
signs, Traffic, warning
Buildings
work, danger, Construction
Caution, danger, website
triangle, signs, mark
Transport
Car, Slip, danger
Radioactivity, nuclear, signs
other
danger, electricity, Circle
X Ray, radiation, signs
beware, danger, Skeleton
Typicons
danger, Caution, warning
signs, cone, Attention
Entypo
Caution, signs, Attention
Caution, danger, Storm
Elegant Font
signs, Warning Sign, Caution
PNG ICO ICNS MORE
OpenWorld
Emblem, danger
48x48
SmoothGNOME
32x32
Humility
Yatta-Blues
Total Web Elements
danger