Requiring them to change the directionality of the light, e.g., ensuring that 100% of it is directed downward at the illumination target, instead of just splashing it everywhere, would be far better.
This 150 Hz flicker may be above the flicker fusion threshold [0] for humans, but not for many animals. Excess lighting hours already massively screw up everything from sleep cycles, feeding patterns, growth patterns migration patterns, etc. in insects, birds, mammals, and plants, and contribute to the human caused mass extinction. Making it flicker would only exacerbate it. Perhaps if the flicker was at a rate in the kHz region, it wouldn't add to the interference.
But the best idea is to either ban lights altogether, or put them all on motion sensors, so both public and private lighting is turned-on only when needed.
This 150 Hz flicker may be above the flicker fusion threshold [0] for humans, but not for many animals. Excess lighting hours already massively screw up everything from sleep cycles, feeding patterns, growth patterns migration patterns, etc. in insects, birds, mammals, and plants, and contribute to the human caused mass extinction. Making it flicker would only exacerbate it. Perhaps if the flicker was at a rate in the kHz region, it wouldn't add to the interference.
But the best idea is to either ban lights altogether, or put them all on motion sensors, so both public and private lighting is turned-on only when needed.
[0] https://en.wikipedia.org/wiki/Flicker_fusion_threshold