Originally Posted By: Hokiefyd
Originally Posted By: wag123
Some luxury car manufacturers offer an optional adaptive brake light system that flashes the brake and tail lights under sudden extreme braking as a warning to trailing motorists. This fact dispels the myth that flashing brake lights are illegal. Maybe they were in the past, but if they were currently illegal the car manufacturers wouldn't be offering them in their new cars.
Cite an example please.
I bet they vary in intensity, without completely doing dark in between pulses as these aftermarket products do. It is, in fact, not a myth that a "flashing" lamp goes against federal law. It is spelled out very clearly in FMVSS 108 posted to this thread earlier. There are ways to work around this, and varying the intensity of the lamp without actually flashing it "on and off" can be one way.
I saw it on a new BMW X5 yesterday. It "strobes" the brake lights at 4hz for 1sec under hard braking and it strobes ALL of the rear lights at 4hz for 5sec under very hard braking.
Originally Posted By: wag123
Some luxury car manufacturers offer an optional adaptive brake light system that flashes the brake and tail lights under sudden extreme braking as a warning to trailing motorists. This fact dispels the myth that flashing brake lights are illegal. Maybe they were in the past, but if they were currently illegal the car manufacturers wouldn't be offering them in their new cars.
Cite an example please.
I bet they vary in intensity, without completely doing dark in between pulses as these aftermarket products do. It is, in fact, not a myth that a "flashing" lamp goes against federal law. It is spelled out very clearly in FMVSS 108 posted to this thread earlier. There are ways to work around this, and varying the intensity of the lamp without actually flashing it "on and off" can be one way.
I saw it on a new BMW X5 yesterday. It "strobes" the brake lights at 4hz for 1sec under hard braking and it strobes ALL of the rear lights at 4hz for 5sec under very hard braking.