abstract
area
asphalt
attention
backdrop
background
barrier
black
caution
city
concrete
construction
danger
design
diagonal
dirty
grunge
grungy
hazard
industrial
industry
lane
lines
painted
pattern
road
roadway
safety
sign
space
street
striped
stripes
surface
symbol
texture
textured
traffic
transportation
urban
vintage
warning
weathered
yellow