Apart from wearing several strobe lights on your motorcycles, this is probably one of the easiest ways of being seen when riding at night. From the clothingmaker, Naked & Famous Denim , I present to you the Glow-In-The-Dark Jeans.
During day, it looks like any other jeans, but at night, it turns in a green glowing pant. You don't even need to shine a light on it for the effect, in the pitch dark you'll still be seen miles away.
Cost: US$ 240
You can buy the Glow-in-the-Dark jeans here .
Given that you can now be seen in these Glow-in-the-Dark jeans, I bet that the French government is going to make these mandatory...