英文關鍵字
architecture
background
city
color
control
crossing
danger
design
direction
driving
electric
electricity
equipment
forbidden
front
green
guidance
highway
illuminated
intersection
lamp
laws
light
pedestrian
red
regulate
road
safety
semaforo
semaphore
sequence
sign
signal
speed
stop
stoplight
street
symbol
traffic
transport
transportation
travel
urban
warning
yellow