40
attention
blue
brake
careful
caution
closeup
condition
construction
danger
direction
down
driving
highway
instruction
limit
limitation
limited
maximum
metal
red
regulation
regulations
regulatory
restrictive
road
roadsign
roadworks
round
rules
safety
school
sign
site
sky
slow
speed
street
symbol
traffic
transport
transportation
triangular
under
warning
way
work
yellow
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