I agree with CatManDo. The reason for really bright, flashing lights is that WHEN you have distracted drivers, they're looking away from the road for maybe 5 seconds at a time. Add in maybe 4 seconds that they would need to brake, swerve, whatever to avoid an accident without causing another, and you're up to a travel distance of as much as 900 feet.

So you want a light that will GRAB the attention of someone who is just glancing at the road for 2 seconds every 5 seconds, from 900 feet away. This requires flashing and it requires lumens. A dim blinkie won't do it, and a bright steady light won't do it.

Blinking bright lights are somewhat annoying, but I don't buy that they're dangerous. Emergency vehicles have way more flashing lights and I don't recall seeing cars crashing into buildings when an ambulance drives by.

I'd be HAPPY to not have to bolt so much crap onto my bike - I really don't like it. But I'm going to keep upping the lighting every time someone does something dumb around me that indicates that they clearly didn't see me.