abstract
asphalt
authority
background
black
car
city
city life
city street
color image
communication
control
day
drive
guidance
high angle view
highway
horizontal
lifestyles
mark
message
no people
outdoor
paint
pattern
rain
red
road
road marking
road sign
rules
safety
sign
signal
simplicity
single word
stop
stop sign
street
symbol
text
texture
traffic
transportation
travel
warning sign
western script
white
white color