404 road sign
ahead
alert
attention
background
barrier
block vector
caution
closed road sign
closure
construction signs
danger sign
dangerous
emergency
end
forbidden
highway
icon
information
isolated
light
marking
message
metal
protection
red
regulatory
road
road block
road closed
roadblock
rules
safety
service area
sign
signage
stand
standing
stop
street
stripped
symbol
temporary
traffic
transportation
warning
white
work
zone