against
arrow
background
blue
board
car
close
clouds
color
colorful
danger
direction
english
halt
highway
icon
isolated
message
metal
nobody
object
octagon
octagonal
outdoor
outside
post
red
road
roadside
roadsign
safety
sign
signage
signal
sky
speed
stop
street
symbol
text
traffic
transport
transportation
travel
warning
white
word