accessory
alarm
alert
aluminium
attention
background
banded
barrier
blank
boundary
careful
caution
color
construction
danger
display
equipment
exclamation
glitter
hazard
hexagon
honeycomb
information
outdoor
pattern
plastic
rectangle
rectangular
red
reflection
reflective
reflex
regular
risk
safety
security
sign
signal
stop
supplies
tape
vibrant
work
yellow