allow
color
concept
control
danger
direction
driving
electric
electricity
element
equipment
forbidden
gray
green
highway
icon
illuminated
illustration
intersection
isolated
lamp
led
light
reallistic
red
regulate
regulation
road
rule
safety
semaphore
sequence
set
shiny
sign
signal
stop
stoplight
street
symbol
traffic
trafic
transport
transportation
urban
warning
white
yellow