Originally Posted by dekindy

I ride in pitch black in the winter with a group. I have both Mars for redundancy and better visibility when it is pitch dark. I got a view of our group from behind once. It was a sight to see. Everyone had their light in the brightest flashing mode and many have two tailights. You cannot believe how much visibility a group like that creates. It looks like a fire scene with all the firetruck lights and police car lights flashing. Motorists probably think they are approaching a bad accident scene!