article
black
collection
color
control
crossroads
danger
direction
electric
electricity
element
equipment
flat
forbidden
front
green
guidance
highway
icon
illuminated
illustration
image
intersection
isolated
lamps
light
object
orange
order
red
regulate
road
safety
semaphore
set
sign
signal
singles
stop
stoplight
street
symbol
traffic
transportation
urban
warning
white
yellow