Re: Say what you like about Teslas @bob
Re the bright LED/HID lights on cars and the horribly bright constant "camera flash" lights on so many bikes. I can't upvote you more than once, so have 100 virtual upvotes from me.
I'm not sure if there are any rules/laws/regulations on the brightness of lights on vehicles, but the Highway Code does specify that headlights must be used in such way as to not dazzle other road users. Some of these HID LED headlights are so bright that they dazzle by design on the "wrong" shaped road, eg a right hand bend downhill from my perspective means oncoming superbright headlights dazzle me. Likewise oncoming traffic or traffic behind going over bumps and going off like camera flashes.