英文關鍵字
automobile
background
blue
car
city
color
control
crossing
danger
dark
downtown
driving
equipment
evening
green
highway
illuminated
industry
landmark
landscape
light
modern
motion
movement
night
outdoor
people
red
regulate
road
safety
scene
semaphore
sign
signal
sky
speed
stop
street
symbol
technology
town
traffic
trafficlight
transport
transportation
travel
urban
warning
yellow