Electronic Message Centers (EMCs) are digital signs that display programmable messages. They are widely used for advertising, public information, and other communication purposes. However, the installation and operation of EMCs are subject to various regulations and compliance standards to ensure safety, effectiveness, and community compatibility. This guide provides an overview of the key regulations and compliance requirements for EMCs.
Federal Regulations
1. Federal Communications Commission (FCC):
- Electromagnetic Interference (EMI): EMCs must comply with FCC regulations regarding electromagnetic interference. This ensures that EMCs do not interfere with other electronic devices or communication systems.
- RF Emissions: EMCs must meet FCC limits for radio frequency emissions to minimize their impact on nearby electronic equipment and communication systems.
State and Local Regulations
1. Zoning Laws:
- Permits and Approvals: Before installing an EMC, businesses must obtain the necessary permits from local zoning authorities. This often involves submitting detailed plans and specifications.
- Location Restrictions: Zoning laws may dictate where EMCs can be installed, such as specific commercial zones, and may prohibit them in residential areas.
2. Brightness and Light Pollution:
- Brightness Limits: Many jurisdictions set maximum brightness levels for EMCs to prevent light pollution and ensure that signs are not overly distracting or harmful to drivers.
- Dimming Requirements: EMCs may be required to have automatic dimming controls to adjust brightness based on ambient light conditions, reducing glare at night.
3. Size and Placement:
- Size Restrictions: Local regulations often specify maximum allowable sizes for EMCs to maintain aesthetic harmony and prevent visual clutter.
- Placement Rules: Rules regarding the placement of EMCs typically include minimum distances from roadways, intersections, and other signage to ensure safety and visibility.
4. Content Restrictions:
- Message Duration: Some regulations specify minimum and maximum durations for displayed messages to ensure readability and prevent distractions.
- Prohibited Content: EMCs may be restricted from displaying certain types of content, such as offensive material, flashing lights, or animations that mimic traffic signals.
Industry Standards and Best Practices
1. International Sign Association (ISA):
- Best Practices: The ISA provides guidelines and best practices for the design, installation, and operation of EMCs to ensure safety, effectiveness, and community acceptance.
2. Illuminating Engineering Society (IES):
- Lighting Standards: The IES offers standards for the lighting aspects of EMCs, including recommended brightness levels and lighting quality to optimize visibility and minimize adverse effects.
3. National Electrical Manufacturers Association (NEMA):
- Product Standards: NEMA sets standards for the electrical components of EMCs, ensuring they meet safety and performance criteria.
Ensuring compliance with regulations and standards for Electronic Message Centers is essential for legal operation, community acceptance, and effective communication. By understanding and adhering to federal, state, and local regulations, as well as industry best practices, businesses can leverage the benefits of EMCs while minimizing risks and enhancing community relations. This comprehensive guide provides a foundational understanding to help navigate the regulatory landscape and achieve successful EMC implementation.
