機器
architecture
asphalt
asphalting
attention
bitumen
border
building
car
caution
closed
construction
crushed stone
danger
dangerous road section
driver
engineer
equipment
excavator
hard hat
heavy
industrial
industry
infrastructure
machinery
manhole
outdoor
pavement
paver
plot
repair
road repair
road roller
road sign
roadwork
safety
sign
street
symbol
tractor
traffic
transport
transportation
triangle
truck
vehicle
warning
work
worker