alert
asphalt
attention
barricade
barrier
block
blocked
caution
city
cone
construction
danger
detour
direction
drive
highway
job
maintenance
nobody
pavement
reconstruction
reduction
repair
road
roadside
roadway
roadwork
route
safety
security
sign
signal
site
stop
street
stripe
striped
symbol
traffic
transportation
travel
triangle
under
urban
warning
work
worker
zone