An engineer claims that switching street lights from white LEDs to amber LEDs reduces light pollution and is less disruptive to nocturnal wildlife, without compromising visibility for drivers.
Which finding from a city pilot, if true, would most strongly support the engineer's claim?
- A
Amber LEDs have been used in maritime navigation for years.
- B
Some drivers reported preferring the look of white LEDs.
- C
Amber LEDs are more energy-efficient than incandescent bulbs.
- Dcheck_circle
After amber LEDs were installed, a regional sky-glow measurement decreased, insect activity returned to baseline, and traffic accident rates remained unchanged.
Explanation
A reports the three relevant outcomes (light pollution, wildlife, driver safety), all aligned with the claim. B, C, and D are tangential.