"James C. Reeves" > wrote in message
...

> And have you found a automatic system that can tell when atmospheric
> conditions have limited sight distance to below 1000 feet (a statute
> requiring lights-on in my state)? I doubt it since none exists that can
do
> that. Manual control is your only reliable option in those situations.

Im not really interested in turning them off when driving conditions are
good.
It doesnt serve any purpose, other than miniscule improvement in economy.