Fog is pure evil. I'm usually out riding for at least an hour in the early morning (around 5:00). For the past several weeks the conditions here in the Sacramento area have been either dense fog or rain, and it shows no sign of changing for at least a few more weeks. Just a couple of hours ago, I finally spent the cash to put a DiNotte 400R on the bike. The PB blinky I'd been using just isn't enough.