Re: Planet Bike Superflash Turbo Tail Light - for running?
If you scroll down on this
site and you will see a graphic presentation of the old nearly useless multi 1/4 watt LED light, the old Planet Bike Superflash (or PBSF, I think), and the Red Zone. The light output at the edges are not given so these are depicitions rather than accurate presentations. Yet they show state the issue clearly. Being cones, if the lights are powerful enough, and the Rabot 1000, Turbo, and Danger Zone are, then at some distance, the cone covers two lanes width although brightness drops off as the cone size increases. It means though as the driver gets closer the light gets dimmer as he /she drives out of the cone.
If you would like, I have a stable of these blinkies, and could give you night views at 6-10 feet to the side (remember motorcycles) at whatever distances (not too many). If I use an easel with my reflective vest on it as reference and car headlights on, I can eyeball it. Saves video editing and camera sensitivity issues. The classic PBSFs could be a baseline of 1 on a scale of ten, and the better of my DIY 100 lumen lights or my car's LED brake /tail lights a 10. Alternatively, I could use a light meter to give you radial intensities of the beam at 10 feet from the light. The eyeball method though somewhat subjective, gets to the heart of the matter better.:twothumbs
Let me know. (Don't you wish such safety equipment was evaluated properly in bicycle or running magazines?) I am VERY low budget.
My previous attempts to compare side visibility did not specifically address this aspect, and it is an interesting question.
BrianMc