Thread: We are officially visible at night
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Old 07-14-08 | 11:37 PM
  #39  
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BarracksSi
Bike ≠ Car ≠ Ped.
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From: Washington, DC

Bikes: Some bikes. Hell, they're all the same, ain't they?

Originally Posted by taser
A typical automotive headlight is between 700 and 2100 lumens. HID automotive headlamps are between 2800 and 3500 lumens.

Nightrider Sol is rated at 115 lumens. So each bicycle was running 230 lumens. These bicycles are running lights at just over 1/10th the output of an automotive halogen high beam and less than 1/3rd the output of an automotive halogen low beam.
Those bike lights are brighter than above the bumper-height beam cutoff pattern of the low beams of any decent automotive headlight produced in the last twenty years.

http://www.skafia.com/itr/hid/full/cutoff.jpg

So, yeah, the complaint that you'll be blinding oncoming traffic -- if they're pointed straight ahead instead of down, that is -- is valid.

Still a kickass setup.
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