I thought I had "plenty of light" - last Monday evening I almost got nailed by a pizza delivery driver less than mile from home. I was running an MS on low mode and a Dinottte on flash.
In this case, the idiot was following another car through an intersection and not even bothering to look "left or right" ..... He had a stop sign but chose to roll through and accelerate. Silly me - I thought he saw me and was stopping.
I wonder if I had another 1000 lumen spraying ahead of me if that would have made a difference.