Reflective material can be painted on the wheels of bicycles, that is, traffic police and cleaners that reflective material
Tolerable。 But it's better to focus on the body. In front of the handle, the two sides of the frame
In this way, no matter what direction you see, you can see the outline of your car, you will be safe. The wheels do not have to, and moving parts are also easy to drop.
You need to know the effect of that stuff and then decide not to paint it. To make sure that the traffic on the road can be seen far away, there are traffic police or cleaners. No more on the bicycle. And a lot of bicycle back there is a little light, there is a strong light at night when the other license.