I just went out to compare the Dinotte 300R to car incandescent tail lighting in a very quick and simple test.

• On low steady the 300R at close range appeared roughly similar to a single car tail light.
• On high steady the 300R at close range appeared roughly similar to a single car brake light.

You guys can improve on the exactness of those findings. But my quick conclusion is that the 300R on steady at night is not dangerously bright for other normal road users. Whether on high, low, or in between, the 300R's steady light is roughly as bothersome to the eyes as are car tail lights and brake lights.