Safety should be the number one priority on the road. Being able to see other drivers' tail lights on the road is crucial. Even though there are numerous styles of tail lights and tail light guards, having the right application for your vehicle is very important.
Some tail light guards should be removed after dark, so the other motorists can see your tail lights clearly. Of course, most manufacturers will tell you that their tail light guards exceed safety regulations, but anything that blocks the tail lights ability to illuminate can be a hazard.