Shielded fixtures direct light downward and prevent light from spilling beyond the intended area, which reduces light trespass and skyglow, key contributors to light pollution.
Up-lighting (A) actually increases light pollution by sending light upward.
High performance windows (C) affect energy efficiency and glare but don't directly address outdoor light pollution.
Dark paving materials (D) reduce heat island effect but don't impact light pollution.
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JesseChou_123
3 months, 2 weeks ago