traffic sign
alert
attention
authorization
background
black
boat
cable
construction
control
danger
dangerous
enter
entrance
entry
forbidden
human
illegal
law
man
no entry
nobody
notice
person
prague
prevention
prohibited
prohibition
protect
protection
railing
red
rope
safety
sailing
secured
security
sign
silhouette
stop
street
symbol
traffic
trespass
trespassing
vltava
voltage
warning
white
white balusters