When you look back and see your rear light reflecting in the road signs over a mile behind you, you know you are visible. And that is just the DiNotte 140R. There is just no comparison between the Dinotte and a superflash. In fact, when I put two superflashes on with the Dinotte, you can't even see the superflashes. I find that I get a lot more space from the carcissists with the Dinotte. I am very happy with that particular purchase.