art
attention
background
black
caution
city
color
concept
control
crossroads
danger
design
direction
drive
driving
electric
element
equipment
forbidden
green
guidance
highway
icon
illuminated
intersection
lamp
light
object
red
regulate
regulation
road
safety
semaphore
shiny
sign
signal
speed
standby
stop
stoplight
street
symbol
traffic
traffic light
transport
transportation
warning
way
yellow