Rear facing safety lights. Red or White ?
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Rear facing safety lights. Red or White ?
The obvious answer would seem at first glance to be to use red as a tail light but I have noticed that for any given choice of lights, that for a given run time until battery discharge that the white "supposedly" head lights have about triple the amount of lumens as the red lights. Therefore I think a rear facing "white" light would be way more visible than the much dimmer red light. The lights I normally use have two or three triple A batteries and attach with rubber straps.
#2
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Every vehicle using the road has white front, red rear. Please don't be that person. Put some blinking red rear, or tape red gel over the rear facing white lights.
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Red... just get a good one. I have a Bontrager Flare R and it's VERY bright.. even during a sunny day.
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Why would we want our tail light to be a blinding bright white like the headlight? That's asking to get run over.
The red reflector/filter is always going to drop the intensity some. You can get lights with red LED's instead, but that's almost pointless. The standard kinds of red binkies, in use on the vast majority of bikes, are as visible and noticeable as we need.
The red reflector/filter is always going to drop the intensity some. You can get lights with red LED's instead, but that's almost pointless. The standard kinds of red binkies, in use on the vast majority of bikes, are as visible and noticeable as we need.
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The obvious answer would seem at first glance to be to use red as a tail light but I have noticed that for any given choice of lights, that for a given run time until battery discharge that the white "supposedly" head lights have about triple the amount of lumens as the red lights. Therefore I think a rear facing "white" light would be way more visible than the much dimmer red light. The lights I normally use have two or three triple A batteries and attach with rubber straps.
Now if bikes had a reverse gear like cars, I could see having a bright white reverse light on a bike. Not many folks ride their bikes backwards, though.
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Always use red on the back. DO NOT use flashing lights at the front (unless you are in an emergency) and I like a nice solid light at the back as well if I can swing it or something with a reasonable flash that isn't to damaging.
There are plenty of really bright rear lights from Light and Motion, Knog, Dinotte, NiteRider... just find one you like and use it. Please don't be the person who is going against the grain and putting other lives in danger because they feel it makes their own safer.
If you are worried about being seen, make sure your lights are on the bike pointing in the right direction and are nice and bright red lights , have a good beamed front light as well and take your lane. If you feel the need, have an extra light or two on the bike in a good visible position then once your bike is well light then you can start looking at other options for hHelmets and things like that (though keep in mind a helmet light is really best for you to see and that is the primary function)
There are plenty of really bright rear lights from Light and Motion, Knog, Dinotte, NiteRider... just find one you like and use it. Please don't be the person who is going against the grain and putting other lives in danger because they feel it makes their own safer.
If you are worried about being seen, make sure your lights are on the bike pointing in the right direction and are nice and bright red lights , have a good beamed front light as well and take your lane. If you feel the need, have an extra light or two on the bike in a good visible position then once your bike is well light then you can start looking at other options for hHelmets and things like that (though keep in mind a helmet light is really best for you to see and that is the primary function)
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Red light rear facing.
It doesn’t need to be thousands of lumens either, that is likely to be more disorienting to drivers than normal brightness. This is why folks plow into emergency vehicles with bright flashing lights. Have you ever seen drivers that have replaced their tail lights with super bright LEDs? It’s actually super distracting.
Also, anyone showing up to a group ride with a super bright white light rear-facing light I will beat to a pulp with my skinny little cyclists arms.
It doesn’t need to be thousands of lumens either, that is likely to be more disorienting to drivers than normal brightness. This is why folks plow into emergency vehicles with bright flashing lights. Have you ever seen drivers that have replaced their tail lights with super bright LEDs? It’s actually super distracting.
Also, anyone showing up to a group ride with a super bright white light rear-facing light I will beat to a pulp with my skinny little cyclists arms.
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OK, you want to be noticed from behind.
It isn’t just the brightness of one light. Position is important.
In addition to one or more red LED on the bike day and night, I have a bright red LED on the back of my helmet that I can turn on and off while riding. (It is a discontinued Serfas.)
I only use it at times. At night, on busy high speed road, I will have it on flashing. Less busy, I only turn it on when I see a reasonable threat approaching in my mirror.
During the day, if I’m on a shoulder and have to take the lane I’ll light up. If I see something skanky developing behind me I’ll also light up the helmet rear.
The height helps make the light more visible to drivers following the vehicle directly behind me. I can’t prove it, but I think adding a bright red suddenly changes the visual field and attracts attention.
That’s my practice, FWIW.
It isn’t just the brightness of one light. Position is important.
In addition to one or more red LED on the bike day and night, I have a bright red LED on the back of my helmet that I can turn on and off while riding. (It is a discontinued Serfas.)
I only use it at times. At night, on busy high speed road, I will have it on flashing. Less busy, I only turn it on when I see a reasonable threat approaching in my mirror.
During the day, if I’m on a shoulder and have to take the lane I’ll light up. If I see something skanky developing behind me I’ll also light up the helmet rear.
The height helps make the light more visible to drivers following the vehicle directly behind me. I can’t prove it, but I think adding a bright red suddenly changes the visual field and attracts attention.
That’s my practice, FWIW.
Last edited by flangehead; 10-17-20 at 11:28 AM. Reason: Typos
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https://www.nps.gov/natr/planyourvis...visibility.htm
- "Bicyclists will frequently be riding in mixed sun and shade. Use a flashing white light on the back of your bike during the day."
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Red or Orange for rear. Blinking pattern.
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https://www.nps.gov/natr/planyourvis...visibility.htm
- "Bicyclists will frequently be riding in mixed sun and shade. Use a flashing white light on the back of your bike during the day."
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I have a red one on the back and a white one on the front. They blink. Highly visible. And there is nothing worse than some idiot riding the wrong way on my side of the street and his white front light causing glare in my vision. Don't be that guy.
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https://www.nps.gov/natr/planyourvis...visibility.htm
- "Bicyclists will frequently be riding in mixed sun and shade. Use a flashing white light on the back of your bike during the day."
(May only be applicable to NPS/Natchez Trace Parkway.)
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in the future try doing an internet search, since you are already on it.
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I saw my first cyclist with a rear facing white light a few nights ago. From a distance and as I approached I couldn't tell whether it was a salmon coming toward me in the right lane, or a very slow moving cyclist moving with traffic, but with a rear facing white light for some reason.
Gotta admit, it was much more disorienting than I'd expected.
He was riding so slowly I couldn't tell until I passed him which direction he was going. I was trying for a PR on a mile long slight uphill grade of around 2%, riding around 20-25 mph (I ain't fast, the KOM is around 30 mph but with a tailwind). So I was traveling a bit slower than most vehicle traffic on that road. I can see how disorienting it would have been for a driver.
Yup, he was on the right side of the road. But couldn't have been traveling more than walking pace, 3-5 mph tops. No problem, it's not a race. But the slowness added to the confusion.
The guy was also wearing some reflective clothing -- maybe a hi-viz yellow vest with grayish-white reflective stripes. But the rear facing white light defeated the purpose -- it was blinding me so I couldn't even see his reflective stripes until I passed him.
It confirmed my reasons for almost always using two or more sets of head and tail lights. At a minimum, if I anticipate being out near dark, I have at least one head and tail light on the bike, and another set on my helmet (small lightweight Blackburn 2'Fers). Even on most road bike rides, unless I'm aiming for PRs and wearing my aero helmet that doesn't have vents for mounting lights.
The main advantage to two or more lights is it enables others to quickly evaluate our direction, orientation and speed. I've had drivers slow and comment favorably that the combination of bike and helmet lights makes it much easier for them to approach and pass safely.
Gotta admit, it was much more disorienting than I'd expected.
He was riding so slowly I couldn't tell until I passed him which direction he was going. I was trying for a PR on a mile long slight uphill grade of around 2%, riding around 20-25 mph (I ain't fast, the KOM is around 30 mph but with a tailwind). So I was traveling a bit slower than most vehicle traffic on that road. I can see how disorienting it would have been for a driver.
Yup, he was on the right side of the road. But couldn't have been traveling more than walking pace, 3-5 mph tops. No problem, it's not a race. But the slowness added to the confusion.
The guy was also wearing some reflective clothing -- maybe a hi-viz yellow vest with grayish-white reflective stripes. But the rear facing white light defeated the purpose -- it was blinding me so I couldn't even see his reflective stripes until I passed him.
It confirmed my reasons for almost always using two or more sets of head and tail lights. At a minimum, if I anticipate being out near dark, I have at least one head and tail light on the bike, and another set on my helmet (small lightweight Blackburn 2'Fers). Even on most road bike rides, unless I'm aiming for PRs and wearing my aero helmet that doesn't have vents for mounting lights.
The main advantage to two or more lights is it enables others to quickly evaluate our direction, orientation and speed. I've had drivers slow and comment favorably that the combination of bike and helmet lights makes it much easier for them to approach and pass safely.
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It confirmed my reasons for almost always using two or more sets of head and tail lights. At a minimum, if I anticipate being out near dark, I have at least one head and tail light on the bike, and another set on my helmet (small lightweight Blackburn 2'Fers). ....
The main advantage to two or more lights is it enables others to quickly evaluate our direction, orientation and speed. I've had drivers slow and comment favorably that the combination of bike and helmet lights makes it much easier for them to approach and pass safely.
The main advantage to two or more lights is it enables others to quickly evaluate our direction, orientation and speed. I've had drivers slow and comment favorably that the combination of bike and helmet lights makes it much easier for them to approach and pass safely.
As @canklecat notes, besides being illegal, having a rear-facing whiter light is confusing.
If you really want to be seen, attach a light to your left shoe, ankle, or pedal. Studies have shown that drivers most swiftly identify a light as a cyclist when the left pedal is lit. I assume this is because nothing else creates the pattern of motion of a pedal reflector or light.
if you ride much at night, you have come across vehicles with those blue-light searing laser headlights----worst of all on pick-ups or SUVs because they are mounter closer to eye level. And if you ride much at night you know how those ridiculous headlights eliminate all detail and provide only black/white contrast---you cannot see anything in the light because it is too bright, and cannot see anything outside of the light because it is too dark.
if you have met these lights, you have probably learned to focus on the edge of the road right near your front wheel, to have the least amount of light getting into your eyes. This massively compromises safety because you can only see a few feet ahead---not enough time to react to a serious obstacle. However, if you look up or forward, you wont be able to see anything and won't know if you are about to ride off the road on the right or into the oncoming lane on the left.
Now ask yourself---do you want a car coming up behind you to be that blind? Sure you can blast 750 candlepower right into drivers' eyes---do you want blinded drivers trying to pass you?
Your call.
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Then there are requirements on all new bikes sold in the US must have...
in the future try doing an internet search, since you are already on it.
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Not only should you not put a white light on the rear, you DO NOT need a high lumen rear light. 20 lumen is plenty for a rear tail light. I like the Planet Bike grateful red. Use two of those if you are really paranoid.
I've decided to fight back against ding dongs with their strobing headlights on the MUP. I bought a 2500 lumen strobing flashlight at Costco. Has a lens to focus the beam into a tight pattern. Going to point that right at mr disco coming the other way than politely ask them to turn there strobe off when we pass.
I've decided to fight back against ding dongs with their strobing headlights on the MUP. I bought a 2500 lumen strobing flashlight at Costco. Has a lens to focus the beam into a tight pattern. Going to point that right at mr disco coming the other way than politely ask them to turn there strobe off when we pass.
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https://www.govinfo.gov/content/pkg/...-sec393-11.pdf
You know the other thing we cyclist need to be careful of is to keep bike lights from being as highly regulated as automotive lights. Read enough laws and there are many restrictions on how lights are aimed, many states have yearly testing. Never really needed regulations like that with a bike when all we had were Schwinn approved dynamo lights with a cheap incandescent bulb. But battery and LED technology has gotten serious. I'm not a big fan or lots of laws but would have to say it would thrill me to death if strobing bike lights were made illegal. Flipping wild west right now.