Martin Q. Blank said:
91_Aggie said:
If they are driving much slower than the speed limit (and they have their headlights on as well), then that is perfectly acceptable.
Until they want to change lanes and try to signal for it - was almost hit by someone doing that.
Hazard lights are to notify other cars you have a problem and need to pull over ASAP. If you can't drive in the rain because of visibility, pull over.
Hazards are for a lot of things, your reason is just one of them. If you move to a country like Italy, there's a whole'nother set of reasons to use them.
In a nutshell, they're to tell people to 'be careul'.