Hazard
warning lights are a pair of intermittent flashing indicator lights that flash
in unison to warn other drivers that the vehicle is a temporary obstruction.
They are also called hazard flashers and hazard lights. Different countries use
hazard warning lights in different ways. In New Zealand we wouldn't use them on
a motorway to warn other drivers that we're slowing down. They are usually
activated by pressing a button on the dashboard that looks like a red triangle,
as shown. Some vehicles will automatically activate the hazard warning lights
under heavy braking or if the vehicle is involved in an accident.
When should you use hazard warning lights?
They are to warn other road users that you are a temporary
hazard. For example, if you have broken down on the side of the road, or you
are changing a tyre. If you are being towed, you should use your hazard warning
lights. If you are being towed and you are using your hazard lights, you will
need to use hand signals to indicate direction because the hazard lights
override the indicators.
When shouldn't you use hazard warning lights?
They shouldn't be used if you are driving in traffic. You
should not use them to warn other drivers if you parked illegally (you
shouldn't be parking illegally). If your hazard warning lights are left on
while you are driving, any signalling with your indicators will not be able to
be seen