abstract
access
ahead
alert
art
attention
background
car
caution
circle
danger
design
do
do not enter
drive
enter
entrance
entry
forbid
forbidden
german
germany
hazard
icon
illustration
isolated
label
law
limit
no
not
outside
prohibited
red
restriction
road
round
rule
safety
shape
sign
stop
symbol
symbolic
traffic
transportation
urban
warning
white