Earlier quoted context omitted.
> The dealer explained that this is a "critical safety feature" that they install on all the vehicles they sell. He then explained that it makes the brake light flash whenever you press the brake pedal. I read about it for 10 minutes, and found there's a legitimate system in use in Europe that detects emergency braking and flashes the brake light. Since that system detects emergency braking and not just pressing the…
There are a fair number of vehicles on the road already with enhanced emergency brake lights; BMW in particular comes to mind. If you REALLY romp on it, another set of segments will light up, I think it might be the rear fogs that come on, along with a single additional flash. Not the godawful strobing every time you brush the brakes like with these "pulse" systems. (which thankfully seem incredibly rare on the west…
FMVSS 108 still requires steady illumination of the stop lamps (including the center high mounted one). I found one article[1] staying that the NHTSA granted a temporary exception to that requirement for Mercedes in 2006. Was that exemption expanded and is it still in effect?