accident
ahead
attention
background
barrier
black
cargo
color
cross
crossing
danger
dangerous
design
engine
folklore
hazard
landscape
level
locomotive
metal
old
open
outback
rail
railroad
railway
red
remote
road
roadside
roadsign
rural
russia
safety
sign
signage
signpost
stop
surface
symbol
track
traffic
train
transport
triangle
unguarded
warning
white