By law, you are supposed to have a CHMSL (center HIGH mounted stop light, emphasis on HIGH) and it's been shown to be effective in getting people's attention (compared to not having it) in passenger cars. But with our large spares in our Jeeps, you can argue it doesn't do much.
But with lights getting brighter and brighter these days, and people driving more distractedly, it certainly helps to have a good rear light solution. I heavily dislike LEDs for the front lights, but I do like them for the rear. I replaced my rear lights with LEDs (made by Grote). I left the factory 3rd brake light as is for now, but I added the lug nut lights with a flasher that @MountaineerTom posted above. The flasher is only on the lug nut lights. It works really well to catch your attention on the road. The flasher that @MountaineerTom posted is a very good one. In very slow moving stop and go traffic, it does not keep flashing every single time you touch the brakes. It's a very effective solution if you live in a place like Oregon where it gets rainy and foggy for months.
But with lights getting brighter and brighter these days, and people driving more distractedly, it certainly helps to have a good rear light solution. I heavily dislike LEDs for the front lights, but I do like them for the rear. I replaced my rear lights with LEDs (made by Grote). I left the factory 3rd brake light as is for now, but I added the lug nut lights with a flasher that @MountaineerTom posted above. The flasher is only on the lug nut lights. It works really well to catch your attention on the road. The flasher that @MountaineerTom posted is a very good one. In very slow moving stop and go traffic, it does not keep flashing every single time you touch the brakes. It's a very effective solution if you live in a place like Oregon where it gets rainy and foggy for months.
