機器
asphalt
backhoe
block
blockade
blocked
bulldozer
caution
closed
cones
construction
digger
dirt
equipment
excavate
excavation
excavator
hard
heavy
highway
industrial
industry
landscape
machinery
maintenance
mover
pave
pavement
paving
power
renewal
renovate
repair
road
roadblock
roadway
roadworks
shovel
signal
site
soil
street
symbol
transportation
urban
vehicle
warning
work
yellow