英文關鍵字
accident
alarm
alert
ambulance
assistance
attention
auto
background
beacon
brigade
bulb
car
emergency
equipment
flash
flasher
flashes
flashing
glowing
headlights
lamp
light
lights
medical
prevention
red
rescue
rotating
safety
security
service
shining
shiny
signal
siren
squad
stop
symbol
tool
traffic
transport
transportation
trasnport
urgency
vehicle
warn