access
alert
area
background
black
body
caution
circle
cross
design
detector
element
hip
icon
implant
information
invisible
isolated
item
joint
key
label
magnetic
metal
metallic
no
part
people
persons
place
prohibited
prohibition
ray
red
sign
signal
steel
sticker
stop
strap
symbol
technology
temperature
warning
watch
wearing
white
wristwatch
zone