Summary:

 Senate Bill 34 (SB 34):  This act proposes revisions to the existing Night Sky Protection Act in New Mexico. The primary focus is on the requirements for shielding outdoor light fixtures to reduce light pollution and preserve the clarity of the night sky.  

Legislation Overview:

 Senate Bill 34 (SB 34):  This act proposes the following changes:  Definitions:  "Fully shielded" is more stringently defined to ensure minimal light escapes upwards or sideways.  The definition of "outdoor lighting fixture" is clarified, emphasizing all permanent or portable outdoor lighting devices.

Shielding Requirements:  The new requirements specify that all outdoor lighting fixtures installed above four feet from the ground must be fully shielded.  Fixtures emitting over 1,000 lumens and mounted below four feet must not direct light upwards.

Outdoor Recreational Lighting:  Restrictions on illumination after 11:00 PM are specified unless for significant sporting or recreational events.

This act would impose the following exemptions:  New exemptions include lighting for roadway navigation and safety on interstates and federal highways.  Temporary outdoor lighting necessary for construction, emergency services, or film/TV production is exempted.  Digital or electronic billboards are explicitly exempted.

Repeals and Adjustments:  Certain exemptions, such as those for fixtures with automatic shut-off devices and specific types of advertisement signs, are removed.  The previous general provision allowing non-conforming fixtures to operate with shut-off devices from 11:00 PM to sunrise is repealed.

Additional Provisions:  The act provides guidelines for when and how existing non-conforming fixtures should comply when replaced.  The act also establishes that more stringent local regulations supersede this act.

Implications:  The objective of these changes is to enhance the clarity of the night sky for both residents and astronomers by limiting unnecessary or intrusive artificial lighting. By refining what constitutes acceptable lighting fixtures and clarifying exemptions, the act seeks to balance safety and environmental considerations with aesthetic and recreational needs.

The revised act could potentially impact businesses, municipalities, and other entities that utilize outdoor lighting, requiring them to upgrade or replace non-compliant fixtures. Additionally, the explicit inclusion of digital billboards and temporary lighting setups introduces clarity regarding modern lighting practices, aligning the act with contemporary needs and technologies.