Originally Posted by
Cassave
As the days are getting shorter I've been riding with a front flasher and immediately noticed a difference in drivers behavior toward me. I'll be staying with it.
I generally ride a rear flasher, it's free, it can't hurt and has a real effect in low sun conditions (ie commute hours).
Hy-Viz is certainly noticeable to most people, except the 8% of men who are color blind.
I have a color blind friend who can't tell screaming hy-viz lime green from beige. But he can see a white flashing headlight like anyone else.
Hi Viz works when it is lit. Daylight and when lit by car lights. This makes it next to useless for cars pulling in from the sides at night. Doesn't hurt, but not as useful as it seems.
In dusk and dawn, as well as in the dark - lights are a good thing that helps. But in broad daylight. I doubt rear makes any difference at all. Front perhaps, sometimes.