英文關鍵字
911
above
accident
arrest
automobile
brigade
car
caution
city
close
closeup
crime
criminal
danger
day
emergency
engine
extinguish
felony
firetruck
first
flashing
gas
handcuffs
injury
light
motion
officer
orange
paramedic
police
professional
public
red
rescue
risk
rush
safety
scene
service
siren
speed
station
training
transportation
urgency
vehicle
violation