By the way, my firsthand video testing agrees with what
ItsJustMe said: the LED illumination of the self-illuminating stuff isn't nearly as good as its reflection when headlights are on it. For an example, look at the scenes shown here:
http://www.mechbgon.com/visibility/activevpassive.html and you can see that the self-illuminating legband is mainly showing its reflective yellow, not its self-illuminating red, if there's even a weak light hitting it.