traffic sign
accident
attention
barricade
barrier
city
construction
construction site
danger
equipment
excavation
fence
forbidden
impossible
obstacle
problem
repair
repair work
replacement
road sign
road up
road work
road work sign
roadwork
safety
security
shovel
site
stop
stop sign
street
symbol
traffic
transportation
trench
triangle
under construction
urban
utilities
warning
work space
workplace