Yes, Underglow lighting is legal in New Hampshire for vehicles, provided it complies with state motor vehicle regulations and local ordinances. The New Hampshire Department of Safety’s Division of Motor Vehicles (DMV) permits underglow lighting as long as it adheres to federal and state standards, including color restrictions and installation guidelines. Local municipalities, such as Manchester and Nashua, may impose additional constraints, requiring drivers to verify municipal codes before installation.
Key Regulations for Underglow Lighting in New Hampshire
- Color Restrictions: Underglow lighting must not display red or blue colors, as these are reserved for emergency and law enforcement vehicles under RSA 266:58. Amber, white, or green underglow is permissible, but green is restricted to volunteer firefighter vehicles.
- Installation Requirements: Lights must be mounted below the vehicle’s bodywork and cannot project directly onto the roadway or other vehicles. The New Hampshire DMV enforces SAE J597 standards, mandating that underglow lighting does not exceed 300 candlepower per lamp.
- Operational Limits: Underglow lighting may only be activated when the vehicle is stationary or in motion, but not during daylight hours unless the vehicle is parked. Local ordinances in 2026 may further restrict activation times in high-traffic zones, as seen in pending amendments to Manchester’s municipal code.