abstract
asphalt
attention
backdrop
background
barrier
black
caution
construct
construction
danger
design
diagonal
dirt
dirty
graphic
grunge
grungy
hazard
hazardous
illustration
image
industrial
industry
lines
notice
old
pattern
pavement
problem
safety
seamless
seamlessly
sign
street
striped
stripes
symbol
texture
tileable
tiles
tiling
traffic
transportation
warning
weathered
worn
yellow