Richard ... oddly, I had a similar thing yesterday .... driving home there was a car towing a caravan coming towards me .... it was broad daylight on a sunny day and the LED headlights made me actually wince they were so bright .... couldn't believe how dazzled I was in the middle of a sunny day.
LEDs are another technology we've sleepwalked into using without the practicalities catching up ..... I'm really not sure they're actually needed on road cars .... unless your headlights were poorly maintained, halogens were perfectly adequate for legal speeds. Problem is car stuff is hugely suceptible to fashion and 'bragging rights' and we're now in an arms-race where merely having adequate headlights puts you at a disadvantage.
They're a big problem in rural areas too .... now the price is down, thoughtless householders and farmers have their places lit up like maximum security prisons ... and the cheapneess to run means they mostly stay on all night ... I know personally that looking out at night has gone from seeing the domestic glow of cottage windows to a heavy scattering of piercing alien incredibly bright and white floodlights .... very intrusive. There should be legislation through planning to cover LED outside lighting (eg that it is shaded so as to shine within the owner's boundaries and no further etc) but this is yet to come or not enforced.
K
