accident
alarm
alert
ambulance
arrest
art
attention
background
beacon
bulb
caution
color
colorful
contour
danger
design
emergency
equipment
fire
flash
flasher
flat
glowing
icon
illustration
isolated
lamp
light
line
linear
lineart
medical
outline
pattern
police
random
rescue
safety
seamless
security
sign
signal
siren
symbol
traffic
urgency
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