Originally Posted by
Spoonrobot
A very bright helmet mounted light had done more to increase passing space and decrease passing speed than anything else, when riding at night. I use a 1200 lumen Zebralight H600w Mk IV, with the temperature controlled brightness it is probably closer to 900 lumens sustained but still it works great. Blinding motorists is an issue created in the minds of Bikeforums posters.
You can use primary (non-rechargeable) CR123A lithium batteries and set the strobe level to 502 lumsn for that model of Zebralight. Runtime is impacted but the brightness should stay the same.
I am very confused by this post. I used to ride with high-lumen lights (bars and helmet). Have done it for years. One of my bar lights was so bright, motorists would flash their brights at me, unless it was basically pointed at the ground. That light was 1300 lumens. Pedestrians and other cyclists covered their eyes in discomfort, completely blinded. People flipped me off and yelled at me--routinely. I am pretty sure none of that was created in my mind. Pretty sure all that happened, like, a million times.
I now use the Outbound Lighting Road Edition, which has a cutoff, and this is just a non-issue now. Great light. Get one with a cutoff, that would be my counsel.