3d
background
black
color
control
danger
direction
electric
electricity
equipment
forbidden
front
go
green
guidance
highway
icon
illuminated
illustration
image
intersection
isolated
lamp
light
multiple
object
order
red
regulate
road
rush
safety
semaphore
sequence
shiny
sign
signal
stop
stoplight
street
symbol
traffic
transport
transportation
urban
warning
white
yellow