background
barricade
barrier
block
blocked
bridge
caution
closed
closure
concept
construction
crane
danger
dead
death
derrick
detour
diversion
divert
end
ending
entry
foreground
hazard
highway
industrial
never
no
nobody
notice
obstacle
road
roadblock
safety
sign
signage
stop
street
stripes
symbol
traffic
transportation
travel
urban
warning
way
white