英文關鍵字
access
admittance
block
caution
city
cone
construction
contaminate
cordon
danger
demolition
diagonal
dismantling
dividing
driving
enclosed
enclosing
enclosure
environment
fencing
fibers
forbidden
hazard
highway
information
lethal
line
mark
message
prohibition
public
red
residential
ribbon
road
rubble
safety
scrapping
security
series
sign
street
symbol
tape
traffic
transportation
warn
waste