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