Heh maybe it's just different rules and regulations in different country.
I know in Malaysia, switching on your hazard lights means that your car is stationary so be aware kinda meaning..
but in Korea, we switch on the hazard lights for many uses u know keke
for example, if there's a heavy downpour, we are "taught" to switch it on to let others behind you know that your car is "there" -_-;
we also switch on our hazard lights during heavy fog when the visibility is almost 0. can't see shit in the fog (some of those frequent visitors to genting should know) we switch it on so that people behind you see your hazard lights and don't come bang into you...
Nowadays, it is like understood..when you cut queue or you did somethng wrong while driving and you feel bad, we on our hazard lights to tell them sorry la~~ +_+
when we wanna park, we on our hazard lights to tell the car behind you that you wanna park instead of left/right signals ^^;
i dunno, i guess it's just different in different countries ^^;