Daytime riding: In broad daylight there is a lot of ambient light, so a steady burn light is unlikely to stand out. During daytime riding, it’s a good idea to use your lights on the brightest, most attention-grabbing pattern they have, because it’s easy for drivers to judge your position when your whole bike is visible, and you want to grab attention quickly.
Riding at night: High-intensity forward-facing lights should not be flashed alone at night, especially if they put out over 200 lumens. You run the risk of disorienting oncoming traffic (be it on 4 or 2 wheels), and make it difficult to estimate your position and speed. Having one flashing light and one steady light is a good compromise — you can grab drivers’ attention but the steady light helps improve distance estimates.
