alert
area
attention
background
barricade
barrier
block
blur
building
cars
caution
city
closed
construction
danger
digging
highway
maintenance
man
metal
no passage
pavement
progress
red
repair
restriction
road
road works
road works sign
roadwork
rusty
safety
sign
site
stop
stop sign
street
symbol
traffic
transport
transportation
travel
triangle
warn
warning
way
white
work
work is underway
worker