I've seen a guy a few times last year going through Hyde Park with a blue light on his downtube spewing a massive blue glow on the ground all around himself. I always thought it seemed like a good idea, he was really hard to miss, I'm not sure about the legality of using blue light however.
I've seen a guy a few times last year going through Hyde Park with a blue light on his downtube spewing a massive blue glow on the ground all around himself. I always thought it seemed like a good idea, he was really hard to miss, I'm not sure about the legality of using blue light however.