abstract
aiming
arrow
asphalt
avenue
backdrop
background
bitumen
black
direction
dirty
floor
forward
front
grange
gray
highway
information
line
material
motion
outdoors
road
roadway
rock
safety
scene
scrap
shiny
sign
single
space
straight
street
surface
symbol
tarmac
textured
traffic
transportation
urban
vertical
way
yellow