How bright is bright enough for a daytime running light?

How bright is bright enough for a daytime running light?

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Discussion

E65Ross

Original Poster:

35,621 posts

218 months

Sunday 19th August 2018
quotequote all
I use an Exposure Blaze rear light basically whenever I ride which is 80 lumens.....not many rear lights come brighter than this....but how many lumens do you think is "enough" for a daytime front light? I generally like Exposure lights...they're expensive but often have good battery life and a nice, rugged design. I have a Mk9 Race which is probably a bit overkill as a general light at 1200 lumens hehe

Cheers

Paul Drawmer

4,941 posts

273 months

Monday 20th August 2018
quotequote all
I read somewhere that 100 was fine for a 'be seen' front light.

daddy cool

4,018 posts

235 months

Monday 20th August 2018
quotequote all
When it causes chumps on Pistonheads to claim they were "literally blinded" by a cyclists lights, then its bright enough IMO.

E65Ross

Original Poster:

35,621 posts

218 months

Monday 20th August 2018
quotequote all
daddy cool said:
When it causes chumps on Pistonheads to claim they were "literally blinded" by a cyclists lights, then its bright enough IMO.
hehe

The Dangerous Elk

4,642 posts

83 months

Monday 20th August 2018
quotequote all
E65Ross said:
daddy cool said:
When it causes chumps on Pistonheads to claim they were "literally blinded" by a cyclists lights, then its bright enough IMO.
hehe
Because a focused LED bulb powered by batteries cannot blind people. who is the chump here ?

daddy cool

4,018 posts

235 months

Monday 20th August 2018
quotequote all
The Dangerous Elk said:
E65Ross said:
daddy cool said:
When it causes chumps on Pistonheads to claim they were "literally blinded" by a cyclists lights, then its bright enough IMO.
hehe
Because a focused LED bulb powered by batteries cannot blind people. who is the chump here ?

E65Ross

Original Poster:

35,621 posts

218 months

Monday 20th August 2018
quotequote all
Some lights can be too bright for sure. Clearly, something very bright in the daytime is less "blinding" than at night, as our eyes adapt with pupil dilation.

My Exposure Blaze is 80 lumens and seems incredibly bright.... Yet some rear lights claim to be over 250+ lumens which, either they aren't, or they're too bright IMO. I simply don't see the need for anything brighter than the Blaze! Just wasn't sure. About a front light because obviously a red light stands out more than a white light!

The Dangerous Elk

4,642 posts

83 months

Monday 20th August 2018
quotequote all
daddy cool said:
[pic]some silly bks image
Not in any way, just amazed you could be so dumb to type that rubbish that is all.

daddy cool

4,018 posts

235 months

Monday 20th August 2018
quotequote all
The Dangerous Elk said:
Not in any way, just amazed you could be so dumb to type that rubbish that is all.
Well, you certainly seem a bit upset.
If you are one of people that I was poking fun at, then I have a top tip - if a light (of a car or bicycle) seems rather bright as you approach it, don't stare into it as you get closer and closer.
The same advice can be applied to other bright sources of light, such as "the sun".
HTH.

The Dangerous Elk

4,642 posts

83 months

Monday 20th August 2018
quotequote all
daddy cool said:
Well, you certainly seem a bit upset.
If you are one of people that I was poking fun at, then I have a top tip - if a light (of a car or bicycle) seems rather bright as you approach it, don't stare into it as you get closer and closer.
The same advice can be applied to other bright sources of light, such as "the sun".
HTH.
Yeh, I'm steaming here, boiling over smile

Buy a decent light and fix it in a place and position that does not require any road user to "look away" from your flashing and moving lamp stuck to you head like most of us considerate cyclists do.

https://www.youtube.com/watch?v=tprm7BjQOD4

RickRolled

339 posts

183 months

Monday 20th August 2018
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I use Blaze Burner rear light, no issues so far @ 100 lumen.

E65Ross

Original Poster:

35,621 posts

218 months

Monday 20th August 2018
quotequote all
The Dangerous Elk said:
daddy cool said:
Well, you certainly seem a bit upset.
If you are one of people that I was poking fun at, then I have a top tip - if a light (of a car or bicycle) seems rather bright as you approach it, don't stare into it as you get closer and closer.
The same advice can be applied to other bright sources of light, such as "the sun".
HTH.
Yeh, I'm steaming here, boiling over smile

Buy a decent light and fix it in a place and position that does not require any road user to "look away" from your flashing and moving lamp stuck to you head like most of us considerate cyclists do.

https://www.youtube.com/watch?v=tprm7BjQOD4
In fairness that doesn't seem like too much of an issue during the day, but he's just using it too brightly at night. The camera will also show it to be a bit worse than it is I suspect; and during the day his light doesn't seem any worse than car lights that are on.

daddy cool

4,018 posts

235 months

Monday 20th August 2018
quotequote all
E65Ross said:
The camera will also show it to be a bit worse than it is I suspect;
Yeah, especially as he could do with wiping the camera lense so that it doesn't cause such massive lens flare/bloom!
If a driver sees the light in the same way then he only has himself to blame for not cleaning his windows... though, at a couple of feet above the tarmac like in that video, he must be driving a Caterham 7, so maybe he doesn't have windows...

Once again, reading moany posts about cyclists, I feel im either the best driver on the road, or just incredibly lucky, because I don't get bothered by lights any more than car headlights, and seem to be able to overtake them safely and considerately without causing more than a few seconds delay to my journey, and without bothering the cyclist...

E65Ross

Original Poster:

35,621 posts

218 months

Monday 20th August 2018
quotequote all
daddy cool said:
E65Ross said:
The camera will also show it to be a bit worse than it is I suspect;
Yeah, especially as he could do with wiping the camera lense so that it doesn't cause such massive lens flare/bloom!
If a driver sees the light in the same way then he only has himself to blame for not cleaning his windows... though, at a couple of feet above the tarmac like in that video, he must be driving a Caterham 7, so maybe he doesn't have windows...

Once again, reading moany posts about cyclists, I feel im either the best driver on the road, or just incredibly lucky, because I don't get bothered by lights any more than car headlights, and seem to be able to overtake them safely and considerately without causing more than a few seconds delay to my journey, and without bothering the cyclist...
It was a cyclists camera

daddy cool

4,018 posts

235 months

Monday 20th August 2018
quotequote all
E65Ross said:
It was a cyclists camera
Yeah I know - but the lens was still messed up, so it makes a bright light into a massive light bloom that takes up half the screen.

The Dangerous Elk

4,642 posts

83 months

Monday 20th August 2018
quotequote all
and the cyclists light was still brighter that the cars lights.

E65Ross

Original Poster:

35,621 posts

218 months

Monday 20th August 2018
quotequote all
The Dangerous Elk said:
and the cyclists light was still brighter that the cars lights.
In the daytime its not more noticeable, he's just a plonker for having it extremely bright at night. But considering this thread is about daytime lights, you've just confirmed that "very bright" isn't too bright for daytime smile

The Dangerous Elk

4,642 posts

83 months

Monday 20th August 2018
quotequote all
E65Ross said:
In the daytime its not more noticeable, he's just a plonker for having it extremely bright at night. But considering this thread is about daytime lights, you've just confirmed that "very bright" isn't too bright for daytime smile
It is, there is no need and as another cyclist it is fking annoying on two or 4 wheels smile