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