accident
area
background
black
brittle
building
caution
construction
danger
dangerous
delicate
drop
electric
electrocution
fall
figure
floor
fragile
fragile roof
hazard
hazardous
icon
illustration
industrial
information
injury
man
notice
overhead
precaution
protection
protective
regulatory
risk
roof
roofs
safety
security
shock
sign
slippery
symbol
triangle
truck
unsafe
warning
water
white
yellow