background
blue
branches
bright
care
caution
clear
code
control
danger
direction
drive
england
give
green
highway
information
isolated
law
object
police
post
priority
red
road
roadsign
rule
safety
sign
signal
signboard
signpost
signs
sky
slow
speed
stop
street
symbol
traffic
transport
transportation
travel
tree
triangle
uk
warning
way
white
yield