英文關鍵字
construction
road
safety
sign
traffic
work
caution
cone
maintenance
repair
signage
transportation
car
driving
highway
industry
laborer
person
reconstruction
stop
symbol
vehicle
worker
barrier
city
equipment
pavement
street
warning
asphalt
construct
control
controlling
detour
directing
flagging
closeup
danger
orange
roadside
roadwork
urban