background
barricade
barrier
block
boundary
city
closed
concrete
construction
control
danger
edge
empty
equipment
forbidden
highway
industry
light
line
no
prevent
prohibited
protection
reconstruction
red
road
roadsign
rough
safety
security
sign
signal
site
stop
street
stripe
striped
structure
symbol
texture
town
traffic
transportation
under
urban
wall
warning
way
white
work