abstain
anti
attention
ban
caution
circle
control
crossed out
diagonal
disallowed
dont
electric
forbid
forbidden
icon
illegal
illustration
information
isolated
kick
message
negative
no
not
notice
pictogram
poster
prohibit
prohibited
prohibiting
prohibition
public
push
red
restrict
round
rules
safety
scooter
sign
silhouette
slash
sticker
stop
symbol
warn
warning
white
zone