arc
art
background
black
cartoon
change
curve
direction
distortion
freight
graphic
icon
illustration
industry
isolated
journey
line
locomotive
motion
passenger
power
public
rail
railroad
railway
repeatable
road
route
silhouette
simple
speed
station
steam
symbol
tourism
track
traffic
train
train tracks isolated
tram
transit
transport
transportation
travel
wagon
waving
wavy
way