accessory
accident
aid
alert
assistance
automobile
background
break
breakdown
bright
car
caution
collapsible
color
concept
construction
crash
danger
emergency
failure
fire
fluorescent
hazard
indication
isolated
jack
medical
motorist
motorway
nobody
obstruction
plastic
problem
protection
red
reflector
risk
road
roadside
safety
sign
symbol
traffic
triangle
vehicle
vibrant
warning
white