backgrounds
cable
carme
city
city life
city street
color image
concepts
control
control of transport traffic
crossroad
electric lamp
electricity
electricity pylon
equipment
graph
illuminated
lantern
light natural phenomenon
lighting equipment
manufactured object
multi colored
no people
order
outdoors
pole
power line
road
road intersection
road sign
semaphore
sign
single object
space
stoplight
street
symbol
thoroughfare
traffic
traffic control
traffic light
transportation
vertical
wire
yellow color
yellow light