英文關鍵字
direction
caution
obstacle
equipment
vehicle
street
safety
asphalt
industry
reconstruction
alert
improvement
cone
sign
danger
traffic
repair
signal
turn
line
barrier
construction
bypass
build
restriction
road
site
roadside
service
limit
maintenance
security
attention
lane
fix
barricade
work
urban
driving
car
city
closed
detour
roadwork
transportation
highway
under
warning