apart
branch
changing
complexity
concept
confusion
cross
crossing
crossroad
diminishing
direction
directional
flash
focus
form
forward
future
gathering
gravel
infrastructure
intersection
iron
journey
junction
lamp
landscape
light
long
perspective
point
rail
railroad
railway
road
roadway
semaphore
sign
signal
speed
station
steel
symbol
track
traffic
transport
transportation
vanishing
way