access
area
attention
ban
caution
change
city
cross
danger
dangerous
decision
design
direction
drive
enter
entrance
entry
failure
forbid
go
halt
hand
highway
information
law
no
no go
not
object
ok
problem
prohibit
protection
restrict
risk
road
safety
sign
signal
stop
street
traffic
transportation
turn
violence
wait
walk
warning
way
zone