英文關鍵字
accident
authority
auto
bar
blue
car
city
close
closeup
control
cop
crime
department
emergency
enforcement
equipment
flashing
force
gleam
glow
investigation
justice
law
led
legal
licit
light
mount
officer
outfit
patrol
police
prevention
red
road
roadblock
roof
scene
sheriff
signal
siren
strobe
traffic
transport
transportation
trouble
up
vehicle
warning