allow
art
background
black
blue
city
color
control
crossroads
danger
design
direction
electric
element
equipment
forbidden
green
guidance
highway
icon
illuminated
illustration
image
intersection
isolated
lamp
light
object
red
regulate
regulation
road
safety
semaphore
shiny
sign
signal
speed
stop
stoplight
street
symbol
traffic
transport
transportation
urban
warning
white
yellow