against
background
black
blue
car
circle
circular
city
danger
drive
enter
entrance
entry
european
forbidden
halt
highway
icon
isolated
law
metal
no
not
object
one
plate
post
prohibited
prohibition
red
road
roadside
roadsign
round
rule
safety
sign
signal
sky
stop
street
symbol
traffic
transport
transportation
travel
vehicle
warning
way
white