英文關鍵字
active
attention
beacons
blue
car
cars
colored
colours
cop
crime
cruiser
deterrent
diode
display
duty
emitting
flash
flashing
force
forces
halogen
illuminating
indicating
indicator
interceptor
light
lightbars
lights
motor
operations
patrol
patrols
police
prowler
red
road
roads
rooftop
squad
squads
strobe
strobes
traffic
transport
transportation
transporting
vehicle
video
visible
visual
warning
warnings