Lots of cyclists seem to be using faulty logic to assume that hi-viz clothing doesn't help. Just because you got hit by a car wearing hi-viz does not mean that it doesn't work. You could reach plenty of similarly bad conclusions using that logic:

- Helmets don't work because I got hit by a car while riding with a helmet.
- Brakes don't work because I got hit by a car while riding a bike with brakes.
- Lights don't work because I got hit by a car while riding a bike with lights.
- Etc, etc.

Try using some common sense. Hi-viz clothing makes you more visible -- much more visible. That's why highway crews are required to wear hi-viz clothes. Scientific studies have proven that hi-viz yellow-green is the most visible color to most people. Google it if you don't believe me. Making yourself more visible makes it much more likely that drivers will see you, but it doesn't guarantee it. There are no guarantees with any safety measure. If you get hit while wearing hi-viz clothing there could be many explanations. The driver could have been texting, talking on the phone, tuning their radio or any number of actions that took their eyes off the road. The driver could have been distracted, daydreaming or simply a bad driver. The driver could have intentionally hit you or meant to give you a scare. The driver could have been color blind. Likewise, the cyclist could have been at fault. The cyclist could have been weaving or veering to avoid a pothole. The cyclist could have taken too much of the lane. The cyclist could have been riding in the dark with no lights.

You know what I think? A lot of cyclists refuse to wear hi-viz clothes because they think it's ugly or nerdy. I can understand that, but I value personal safety over appearances. Apparently many cyclists feel otherwise judging by the numbers of them I see wearing black, gray or dark clothes while cycling on busy roads.