I like the fact that the DRLs include the rear lights come on too.

What I discovered is that you can put the front and rear fog lights on without having to put the headlights on.

That's a good idea, the DRLs are pretty bright, probably better in fog than dipped beam.

All we need is other road users to use any lights at all in fog....

I believe that dipped headlights are now a legal requirement in any poor vis., but word certainly has not got around.