My comment wasn't meant to offend people who suffer from epilespsy - more a comment on how f*ckin' irritating flashing lights are on a bike.....
Irritating? I don't understand why? They're very effective for making your presence known, especially on those days when light is low. Even at night though, I've never had any negative comments in 3 years of riding with Blackburn rears on 'strobe' setting. TBH I don't give a fig if my lights are "f*ckin' irritating" to a small percentage of drivers (1%), as long as they prevented a large percentage (99%) of drivers from driving into the back of me in a smidsy like fashion! As for setting off epilepsy, they don't flash anywhere near fast enough to trigger attacks.
Below quote is from the epilepsy foundation.
"The frequency or speed of flashing light that is most likely to cause seizures varies from person to person. Generally, flashing lights most likely to trigger seizures are between the frequency of 5 to 30 flashes per second (Hertz)."
Below, from Wiki, but hey, it's probably correct.(?)
- a light with a steady mode is considered approved only if it conforms to BS 6102/3 or an equivalent European standard;
- a light without a steady mode is considered approved only if it flashes at a constant rate of between 60 to 240 flashes per minute and has a luminous intensity of at least 4 candela;
I would guess that anything that flashes 4 or less times per second is deemed to be safe for epileptics, and the reason that all approved lights flash 60-240 times a minute/1-4 times a second is because of the above reasoning.
Your honour, the defense rests.