[CGH3]

I've seen Porsche (and other) race cars with front LEDs that blink ultra-fast, presumably telling the car ahead it's about to be passed. Similarly, I've seen taillights that blink more rapidly with heavier braking. Are either of these available for street Caymans?

 

[s999sws]

The 981 brake lights flash under hard emergency braking, but the front l.e.d.s don't.
sws

 

[darcus]

Have you seen this effect in person or are you referring to the phenomenon that occurs with LEDs on video?

 

[canux]

Have you seen this effect in person or are you referring to the phenomenon that occurs with LEDs on video?

This is what I was thinking as well. In the video business getting rid of this requires a genlock device:

https://en.m.wikipedia.org/wiki/Genlock

Presumably this happens with anything where source and capture device are both cycling.

 

[s999sws]

I've been behind a car and seen it with my own eyes, Mercedes newer models also do it.
sws

 

[chows4us]

Don't confuse the video problems with LEDs with actual Adaptive Brake Lights. Under heavy braking, rear LEDs lights will flash if advertised as Adaptive Brake Lights.

 

[CGH3]

On TV only, though it appears quite clear.

 

[s999sws]

I think the idea came from what experienced and professional drivers used to do in the uk, I don't know about America . They would allow their foot to quickly pump the brake pedal, causing the rear light to flash , it was known here as "cadence braking" .
I believe that the thought behind it was that it would alert the cars behind that an emergency, or faster than normal stopping, was occurring .
Sws

 

[ELP_JC]

For the record, 981s DO NOT have front LED turn-signals, or even headlights. Just DRLs, but those never flash. With bright LED brake lights, plus a high (and long) 3rd one, like in our cars, I don't think flashing is required. But there're modules that can be installed to do just that. They're popular with motorcycles (no 3rd brake light), and some dealers like to install them on cars (at a hefty price) to increase their profits. It's better to leave any modern car's wiring system intact, and just pay attention to your driving, rather than relying on questionable devices to supposedly keep you out of harm's way, like the annoying flashing headlights on motorcycles, but to each his own.

 

[canux]

On TV only, though it appears quite clear.

I know, I know, it is a reddit link, but it was a question for Top Gear producers. Like I said earlier, this is a genlock issue:

https://www.reddit.com/r/TopGear/comments/1amd2b/hey_rtopgear_i_have_another_question_about

 

[ViCiouS]

https://www.youtube.com/watch?v=1Wk28sxMcyc#t=249

I think it depends on country, but 981s can/do have adaptive brake lights.

Anything faster strobe then this is due to camera frame rate / genlock.