Wasn't it who wrote:
Thus spake Les Hemmings ) unto the assembled
multitudes:

The new LED cats eyes on the M20 leave trails like tracer shells in my
mirrors at night. And if i move my eyes i can see the flicker too...

Coo, is that what they are? How are they powered - is it just by the light
of oncoming vehicles? There are some similar such items on the eastbound
A27 for a stretch after you exit the Southwick tunnel.

http://www.aixtron.com/press/0211e.htm

"Power is generated via solar cells and a storage battery."

But if that's the case, it's odd that they flicker.

--
Mike Williams
Gentleman of Leisure