asphalt
attention
background
black
board
build
caution
city
construction
danger
design
digger
fence
fix
ground
highway
hole
icon
industrial
industry
large
machinery
nobody
orange
outdoor
pavement
reconstruction
red
repair
repairs
road
roadblock
roadwork
safety
service
sidewalk
sign
site
stop
street
symbol
traffic
transport
transportation
urban
warning
white
work
worker
yellow