Would love to hear tips and links to research. I've seen a few studies on daytime running lights reducing accidents in motorcycles, cars, and bicycles. It is interesting how they do the studies -- because the argument is always that having lights on may make someone drive more safely.
If they "always" have this argument, it should be easy for you to find
one example to show.
I don't think many people say that's why daytime running lights are safer.