[Closed] Brightest rear light?

Hope District

I use a Bontrager Flare RT along with my Red-eye. Have also got a Hope District which lives on my e-bike these days.

I have a Bontrager Flare which has brighter flashing and static modes for daylight. It's lasted for 100 mile rides and no one has driven into the back of me yet.

Moon Nebula is very bright. I’ve been beeped and flashed at the couple of times I ran it in full power solid setting - 100 lumens I think.

I tend to use it on a pulse mode so it’s lit st all times, but with a brighter flash through the constant.

It also has multiple extremely bright flashing modes.

I’m a year and a bit into using it with no dramas so far.

See.sense Ace

Can I just ask why?

I understand the need to be seen but when you have something extremely bright pointing backwards you are doing no favours whatsoever to the person following you. I've also found extremely bright flashing lights (on their own) to be very disorienting in terms of being able to determine distance. Maybe it's just been the time of day I've come across this (around sunset) but it's something to consider. Is there any real need to be brighter than any other tail light?

Another vote for Bontrager Flare. Maybe even too bright. Had more than one unhappy motorist at traffic lights (not so) politely ask to cover it as the pulsing flash mode was blinding them whilst waiting for the lights to change. I now put my hand over it when stopped and traffic has already stopped behind me. Nobody has ever run in the back of me which is a definite plus point.

Can I just ask why?

Cos Colin would like to be seen from afar?
Who cares what distance you can see a cyclist from, as long as you see them, no?

I like to be lit up like a ****ing Xmas tree, too many blind car drivers around for my liking.

Can I just ask why?

Sure. It's because there are many roads I want to ride that have other traffic travelling at 60mph and the further away folk see me, the more chance they have to slow down and/or take avoiding action. This is, as my OP says, for daytime riding. At night, a couple of smaller lights work well enough n conjunction with reflectives.

Only one winner here. It’s a four4ths Scorpion. Standard issue now on dual carriageway TT racers.

https://four4th.co.uk/products/lights/scorpionqr/

Well you did ask for the brightest. I love mine, especially the intermediate green/white pulse between red to get noticed. Visibility is easily half a mile and duration is 12 hours plus (which I’ve tested!). But I don’t use it on my road bikes. There I use a pair of Cateyes.

+1 Moon Nebula

I run it on the lowest setting, of four, and it's perfect.

On full it burns your retina and can be seen from Mars.

I have a smart double tail light which I think would meet your criteria. Its got a very focussed beam so would be visible from a long way behind. I use it in conjunction with a wide beam light.

I thik for daytime use on unlimited roads a focussed beam rear light would be better than a wide beam one.

I had to ask my m8 to not use the flashing mode on his Knog Blinder Mob V, when I'm riding behind him, as I couldn't see shit, so maybe one of those?

Exposure Trace-R

Scotroutes did you not used to have a cherry bomb?

Budget-ish option, magicshine do one that fits with their (I.e. most) batteries. No much use on its own unless a runtime measured in days is needed!

Fair play, I missed the daytime stipulation for some reason. That makes far more sense now.

I have just bought a Leyzne Strip Pro 300. It has a specific daytime flash mode and various other modes for night use. Can't comment on its longevity but it looks robust and it's easy to use and mount.

Beam pattern is very good and it's certainly bright enough for daytime road riding.

Can be had for 30 quid at Halfords too

I am using the (180 lumen) Moon Nebula II for commuting and find it plenty bright enough.

I almost never run my Nebula on the brightest modes, it's retina burning!

Thanks for the ideas folks. I'll have a wee dog around some of those and see how spendy they are.

Scotroutes did you not used to have a cherry bomb?

Indeed - and I still do. 9 years and still doing well, though the clip has got a bit slack with age (haven't we all).

Really bright rear lights may help people to see you from a long way away, but as they get closer, it’s absolutely impossible to actually see where the cyclist is, it’s just a red haze at some indeterminate distance ahead.

Imagine following a fog light which is flashing, now double it. That’s what you’re doing to people behind you.

Buying a retina burningly bright rear light is just idiotic. It won’t make it safer for you, you’ll just piss people off. This coupled with the fact that they can’t see you due to the bleaching of their rods and cones, and you’re actually at more risk.

That's an opinion. One I disagree with. But thanks anyway.

I might be wrong but I don’t think any light burns your eyes in daylight?
That’s what the op was asking.

Riding at night, yes turn it down but daylight, I’d like to be seen

The leyzne strip ones are great

The Bontrager Flare RT has a light sensor so the brightest modes are only available during daytime (unless you disable the sensor)

If you’re sitting behind a modern car with LED tail lights, stopped at junction with the brake lights lit, they’re really bright.

A Hope District is even worse. I speak as a previous owner and having been told by someone following me that it was too bright. I tested it by sending my wife out ahead of me in the car. It was diabolical on steady and completely
Blinding on flash.

An exposure TraceR can be seen from over a mile away in daylight.