It’ll help but don’t rely on modulating lights. Even police cars with flashing lights aren’t safe from being cleaned up. Any time you’re stopped or slow you want to be looking at the mirrors and ready to accelerate, either into the ditch or if that’s not safe then there’s usually room in the middle of the road between your lane and the oncoming lane - a very uncomfortable place to park a bike but safer than behind a stationary car. I’ve been hit from behind once in a car about 20 seconds after I stopped with no crest or anything they just weren’t watching and hit hard enough to nearly write off my car. I’ve lost count of the number of near misses on a bike (where I was able to move out of the way).