background
barricade
barrier
beam
block
bright
caution
circles
city
closed
construction
danger
dangerous
equipment
fence
flash
glow
hazard
highway
icon
industry
isolated
lamp
lantern
lens
light
lights
orange
pattern
plastic
red
repair
road
roadside
safe
safety
security
shining
sign
signal
site
stop
street
temporary
traffic
transportation
warning
way
work