mila - you shouldn't put your hazard warning lights on in the fog as it causes all sorts of confusion. Hazard warning lights are to warn people that your car is a hazard - i.e. it is broken down. They are not supposed to be used while your vehicle is operating normally (indeed in some countries it is illegal, and may well be here for all I know).

This was discussed here; http://www.qatarliving.com/node/49433

Better to use your fog lights if your car has them.

--------------------------------------------
http://tall-and-ginger.blogspot.com