traffic sign
ahead
alert
american
asphalt
attention
barricade
barrier
car
caution
city
closed
construction
construction site
danger
equipment
hazard
highway
industrial
infrastructure
maintenance
obstacle
orange
reconstruction
red
repair
road
road construction
road sign
road work
roadsign
roadwork
safety
security
service
sign
signal
site
stop
street
symbol
traffic
transportation
under
usa
vehicle
warning
work
worker