art
caution
character
control
controller
crossroad
danger
direction
electric
equipment
go
green
guidance
highway
icon
illustration
instruction
intersection
isolated
light
navigation
object
realistic
red
regulate
regulation
ride
road
rules
safe
safety
semaphore
set
sign
signal
stop
stoplight
street
symbol
traffic
traffic light
traffic lights
transport
transportation
urban
wait
warning
way
yellow