Why is >200 lumens considered too bright?
#26
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I guess I'm lucky in that on a 10 mile commute, I am rarely facing oncoming traffic, either bike or car. Also, since I'm in NYC, I don't need lights to see except in a few very short stretches. So many of our streets are one-way.
My lights are a Lezyne Super Drive, about 450 lumens, and a Keygos flashlight, about 5-600 lumens. They are bright and the biggest problem on my commute, day or night, is pedestrians in the bike lane. These lights make them plenty aware that I'm coming, and I don't use them together.
My lights are a Lezyne Super Drive, about 450 lumens, and a Keygos flashlight, about 5-600 lumens. They are bright and the biggest problem on my commute, day or night, is pedestrians in the bike lane. These lights make them plenty aware that I'm coming, and I don't use them together.
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If I was to compare myself to other cyclists and their powerful lights, then I am just a bike ninja...I only use a 200 lumens helmet light.
#30
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At the few intersections when I'm stopped where I really do point straight at oncoming cars I always put my hand over it.
#31
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Agreed.
My vision doesn't get any better because I'm riding a bike. Why should I use less light than a car?
Car turn signals and parking lights seem to be more than 200 lumens these days, and no one advises cars to turn off their headlights.
So yes, I think there is a double-standard.
My vision doesn't get any better because I'm riding a bike. Why should I use less light than a car?
Car turn signals and parking lights seem to be more than 200 lumens these days, and no one advises cars to turn off their headlights.
So yes, I think there is a double-standard.
#32
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Car lights are not pointed horizontally into infinity. They're angled so that drivers can see the road. You too can do the same thing with your powerful lights on your bicycle. Set your lights so that it falls onto the ground at a good distance for your riding conditions. If helmet mounted you can tilt your head backwards a little bit to have the light completely horizontal if needed.
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I'm pretty sure that B&M has been keeping up with LED tech and just not mentioning it to anyone. Peter White reports that Supernova has done that
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I got a lens for the Magichsine that it'sjustme recommended that spreads the light output into a floodlight that does a great job of illuminating the area right in front of the bike. I looked, but I can't find the link for it now, but it was well worth the $7 or $8 I paid for it. It obviously cuts the throw, and when I paired it with another Magichine set for farther down the path it did an outstanding job of illuminating the pavement. But it really cuts into the battery life, and I'm going to ad a 18650 XML light for the throw. It's either going on the handlebars, or on the helmet.
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The main reason I have a shaped beam headlight is that it puts the light where you need it, not everywhere.
now that I have a shaped beam with a reasonable number of lumens I get a lot more people flashing me. My light is still considerably less powerful than a car low beam, I think there is some stupidity involved.
now that I have a shaped beam with a reasonable number of lumens I get a lot more people flashing me. My light is still considerably less powerful than a car low beam, I think there is some stupidity involved.
If you have a light, you have the responsibility to adjust it properly so that you do not blind oncoming drivers, and so that it is pointing in a direction most helpful for you to see what it is you need to see. If you don't, then you just wasted a lot of money on a light you are using inproperly.
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or maybe I have taken quite a bit of care to make sure it's adjusted properly and they don't think bikes should have lights that are approximately as bright as a car light. I'm not discounting the idea that they are just bullies as well, there is a lot of that going on around here. A car headlight, even on dim, is pretty blinding if you are forced to look at it.
#38
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With that said, most of the time I am pushing 1000+ lums, and that is just on my helmet!!
I have at last DOUBLE 1200 lums on the bars, and a 1000 on the helmet. Do I think I am too bright? Hell now. I am 72 years old, and plan on making it to at least 80. . I wouldn't relish 3000+lbs of steel running over my frail body because they didn't see me or think it is okay to cut me off and take my rightofway. In the envoriment that I commute in (early morning rush(dark), evening rush(dark)), if I could get one of those lights the airplanes have that you can see for 20 miles, and still look cool, I would mount one of them..
Hope I answered your question...
#39
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The problem with it shining in their eyes is twofold, one, it temporarily blinds them, and two, because they are temporarily blinded, and because now your light is basically all they can see, they are more likely to drive towards you since you naturally turn towards that which you are staring.
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Notice the big heads on these babies..
Then when I go heavy.. The triple is rated at 4000 , but, to be on the safe side, cut it in half.. A cool 2000, the one beside it is just a measly 1800.. Plus, I still be packing heavy on the helmet too.. Like I said, I have made it to 72, I want to try to make it 80.. If I was out there with just 200 lums, in the areas and times I drive in, I be a sitting duck..
#41
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I don't feel safe on unlighted rural roads without at least 300 lumen headlight.
Was running a 250 lumen light on my helmet, but after a cop out-chickened me with their spotlight and pedestrians said "Ow!", I ditched the over-bright headlight idea and put that light on my handlebars. Now running a sub-100 lumen light on the helmet, set to blinky. Seems to have the same desired effect.
I purchased an E3 Supernova asymmetric light (around 300+ lumens) for my dynamo setup not knowing that it was a shaped beam, but it works great, would not go with their off-road symmetric beam version.
Was running a 250 lumen light on my helmet, but after a cop out-chickened me with their spotlight and pedestrians said "Ow!", I ditched the over-bright headlight idea and put that light on my handlebars. Now running a sub-100 lumen light on the helmet, set to blinky. Seems to have the same desired effect.
I purchased an E3 Supernova asymmetric light (around 300+ lumens) for my dynamo setup not knowing that it was a shaped beam, but it works great, would not go with their off-road symmetric beam version.
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Well, if your 200 lums ran across me, with on of my small light setups, yup, I would be noticed, and you be a ninja!!
Notice the big heads on these babies..
Then when I go heavy.. The triple is rated at 4000 , but, to be on the safe side, cut it in half.. A cool 2000, the one beside it is just a measly 1800.. Plus, I still be packing heavy on the helmet too.. Like I said, I have made it to 72, I want to try to make it 80.. If I was out there with just 200 lums, in the areas and times I drive in, I be a sitting duck..
Notice the big heads on these babies..
Then when I go heavy.. The triple is rated at 4000 , but, to be on the safe side, cut it in half.. A cool 2000, the one beside it is just a measly 1800.. Plus, I still be packing heavy on the helmet too.. Like I said, I have made it to 72, I want to try to make it 80.. If I was out there with just 200 lums, in the areas and times I drive in, I be a sitting duck..
#43
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I'm very bright on my front bars, but each light is aimed carefully. The setup is a NR 1500 in the center, pointed slightly down and run in medium most of the time, then two NR 650 Luminas (cordless) on each side. The Lumina on the right is pointed up slightly and towards the curb, similar to how a right headlight on a car should be aimed. The Lumina on the left is pointed down slightly more than the 1500. Here's the setup:
It totals about 2000 lumens (actual; advertised 2800) and is very pleasant to ride with at night. I can definitely see and be seen. When aiming the lights, I stood the bike and approached it in my car and on foot a few times and found what I feel is an adequate balance that is not too "blinding" to motorists. It is bright enough that oncoming traffic does not know it's a bicycle, however it is not blinding enough to be overly distracting. When riding a MUP I use only one of the 650s on low and leave the other lights dark. An added advantage of my setup is that if I'm riding in the dark for an extended period I can use one at a time for several hours of riding.
Motorist reaction to my lights is that I have never had brights flashed at me, but on the other hand they give me plenty of room. I think people are surprised when they stop and wait, and then when I pass by they see it was a bicycle. I get lots of compliments on the setup from people, and it takes a lot of stress out of riding around at night.
I'm like cehowardGS, I made it to 59 and plan on making it to 80 and beyond lol
It totals about 2000 lumens (actual; advertised 2800) and is very pleasant to ride with at night. I can definitely see and be seen. When aiming the lights, I stood the bike and approached it in my car and on foot a few times and found what I feel is an adequate balance that is not too "blinding" to motorists. It is bright enough that oncoming traffic does not know it's a bicycle, however it is not blinding enough to be overly distracting. When riding a MUP I use only one of the 650s on low and leave the other lights dark. An added advantage of my setup is that if I'm riding in the dark for an extended period I can use one at a time for several hours of riding.
Motorist reaction to my lights is that I have never had brights flashed at me, but on the other hand they give me plenty of room. I think people are surprised when they stop and wait, and then when I pass by they see it was a bicycle. I get lots of compliments on the setup from people, and it takes a lot of stress out of riding around at night.
I'm like cehowardGS, I made it to 59 and plan on making it to 80 and beyond lol
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Last edited by Mark Stone; 12-16-12 at 10:48 PM.
#44
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Back to the OP - I think a lot of the discussions on the forums about +400l lights being too bright have to do with MUP riding, where more than two or three hundred lumens can be blinding to oncoming cyclists and pedestrians
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200 lumens is the bare minimum that I would ride with, and then only as an emergency backup light. I had a Dinotte 200 once and I can really only call it "adequate" but these days there's no reason to limit yourself so much.
You do need to be considerate when aiming the light though.
You do need to be considerate when aiming the light though.
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#46
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https://www.outbackcrossing.com.au/FourWheelDrive/Driving_and_Target_Fixation.shtml
https://www.oncourse4wd.com/roadcraft...t_fixation.asp
https://www.msgroup.org/casestudy1.aspx?num=1
It is best to not blind oncoming drivers, whether you are in a car, truck, or on a bicycle. Our lights should be adjusted in such a way that they do not shine into other driver's eyes. The best way to ensure that, is to adjust them according to the same specifications as required by the vehicle code for your state. The regulations have been created to combat this problem specifically.
Since my headlight is over 500 lumens, I have made sure I keep it adjusted so it does not shine oncoming drivers' eyes. The person I originally posted my reply to does as well as they reported after my post. We all should and shouldn't be so quick to pass it off as if it doesn't matter.
#47
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The main reason I have a shaped beam headlight is that it puts the light where you need it, not everywhere.
now that I have a shaped beam with a reasonable number of lumens I get a lot more people flashing me. My light is still considerably less powerful than a car low beam, I think there is some stupidity involved.
now that I have a shaped beam with a reasonable number of lumens I get a lot more people flashing me. My light is still considerably less powerful than a car low beam, I think there is some stupidity involved.
I do not mind having other cyclists or vehicles using extremely bright lights. I can see them & they can see me better.
Last edited by daveF; 12-17-12 at 11:31 AM.
#48
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Because car "low beam" headlamps are required to be focused and controlled, whereas most bike LED lights are like flashlights, with a conically-shaped beam with a lot of spillover that not only does nothing to light up the road, it goes into the eyes of oncoming traffic users (cars, cyclists, everyone). Essentially, you're running around with "high beams" on, and if you're a driver, you know how annoying that can be.
If you really want to see what a relatively small amount of lumens can do when properly shaped, investigate the lights that are StZVO-approved. Examples include the Schmidt Edelux and Philips Saferide (video). Especially for the dynamo-driven versions, the lumens are restricted because power input is restricted; however, these lights still perform brilliantly (no pun intended) simply because they don't waste about half their energy on lighting up trees and blinding oncoming traffic.
If you really want to see what a relatively small amount of lumens can do when properly shaped, investigate the lights that are StZVO-approved. Examples include the Schmidt Edelux and Philips Saferide (video). Especially for the dynamo-driven versions, the lumens are restricted because power input is restricted; however, these lights still perform brilliantly (no pun intended) simply because they don't waste about half their energy on lighting up trees and blinding oncoming traffic.
I prefer a round symmetrical beam rather than a StVO approved as you can see things (like branches) hanging overhead. Part of my commute is on a trail with lots of trees with branches that are hanging too low after storms. Light in a round beam isn't always wasted. Otherwise, we wouldn't have high beams on cars and mountain bikers would use StVO approved lights (which would be a really bad idea).
Last edited by daveF; 12-17-12 at 11:48 AM.
#49
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It simply isn't true in the real world. First, no one is ever rendered blind by a bicycle light. Our terminology "blinding light" or "drivers are blinded" is merely a colorful use of terminology that never really means that their eyesight is completely removed. No more than the term "blowing your mind" means that their brain blows up. Lights are bright, they are distracting, and sometimes you cannot see what is immediately behind the light or around the light, however you are still able to see everything else around you. The only way a bike light can completely remove your eyesight is if it is right in your face. Then the last part of your statement - that people automatically steer into the bright light - is not true in the real world. If that happened, most of us would be in emergency rooms or dead as a doornail. If it were true, most cars on the highway would be having head-on collisions at night because of each others headlights. In the real world it just doesn't happen.
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#50
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I roll with 2,700 lumens - 1,200 and 900 on the bars at different angles, but by no means horizontal, and 600 lumens on my helmet for lateral sight if needed. This solution comes from years of commuting in the dark. My problem though is not motorists, it is wildlife.