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Bill

HB 452

Outdoor Lighting - Guidance and Use of State Funds

2025 Regular Session Introduced by Michele Guyton and 7 co-sponsors

Maryland conditions state funding for outdoor lighting on compliance with dark-sky friendly standards to reduce light pollution while balancing public safety needs.

Approved by the Governor - Chapter 389
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Bill Summary · HB 452

Legislative bill overview

HB 452 establishes guidance for Maryland's use of state funds to purchase outdoor lighting and requires that any outdoor lighting funded by the state meet dark-sky friendly standards. The bill aims to reduce light pollution while maintaining public safety and operational needs for state-funded outdoor lighting projects.

Why is this important

Light pollution affects wildlife migration patterns, disrupts ecosystems, impacts human sleep and health, and wastes energy resources. By conditioning state funding on dark-sky compliant lighting, Maryland creates market incentives for manufacturers and municipalities to adopt less harmful lighting technologies, potentially influencing broader regional adoption.

Potential points of contention

  • Cost implications: Dark-sky friendly lighting fixtures and associated upgrades may have higher upfront costs, which could burden smaller municipalities or agencies with limited budgets
  • Definition and enforcement ambiguity: "Dark-sky friendly" standards may lack sufficient specificity, creating uncertainty about compliance requirements and how enforcement will be administered across diverse state agencies
  • Public safety concerns: Some stakeholders may argue that reduced outdoor lighting compromises security and visibility for pedestrians and vehicles, though modern dark-sky lighting can maintain safety while reducing glare

Compiled from official sources — confirm details with the bill’s official record.

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