abstract
airport
background
city
concept
connection
design
element
fast
ferry
graphic
illustration
legend
line
map
metro
metro map
modern
navigation
net
node
passage
plan
public
railroad
railway
rapid
river
road
route
schem
scheme
shape
speed
station
suburban
subway
system
template
track
train
transfer
transit
transition
transport
transportation
tube
undeground