英文關鍵字
construction
work
road
signs
safety
traffic
danger
sign
symbol
street
roadblock
highway
repair
signage
transportation
warning
caution
closed
urban
barricade
orange
red
travel
divert
improvement
stripes
transport
attention
entry
obstacle
detour
isolated
white
barrier
block
pattern
arrow
control
driving
hazard
infrastructure
maintenance
notice
organized
pointing
post
protection
right
beware
row