Originally Posted by
fietsbob
Not on your helmet , so you dont dazzle oncoming drivers if you look their way.
Good point. At one time lights were usually mounted on the fork crown or even further down the fork. Now most people have them up on the handlebars, which is higher than the position of all but the largest trucks and 4-wheel drive vehicles. So that's going to make even my 350 lumen light seem more dazzling than it really is.
Hard to say where the happy medium is.