Originally Posted by pletcgm
It definitely does not hurt, especially in low light areas such as tree covered roads or tunnels
Yes that is my thought. Unfortunately I have no tunnels or shade on my ride to give temporary shielding from the intense AZ sun.
It was kind of a silly question, of course they can only help (except more frequent battery changes). I do think its more help when overcast/grey than on a full sun day. Really the question should have been if others used lights for daylight.
Al