機器
accident
asphalt
background
bad
break
bumpy
condition
construction
countryside
crack
damage
danger
decay
defect
destroyed
destruction
dirty
disaster
earthquake
gravel
gray
ground
highway
hole
infrastructure
line
old
outdoors
pavement
pit
pothole
potholes
puddles
quality
rain
repair
risk
road
roads
rough
sand
stone
street
surface
tarmac
texture
traffic
transportation
water