Yet another emphatic agreement.
This is an area where Hocus Pocus claims of LED bulb vendors really gets unmasked in a hurry. Tail light vendors who claim to meet DOT specifications had better do so as this law still has teeth in it.
Replacing incandescent fixtures with LED makes a huge difference in safety in my humble opinion. I can see it when I follow an RV. I attribute some of the brightening of lights to far less voltage drop. The strobe-like sharp flash of an LED tail light turn signal catches my eye better.