Modifies provisions relating to auxiliary lighting for motorcycles

HB 1427 sets technical standards for motorcycle headlight modulation systems that vary brightness (e.g., flashing or pulsing) to improve visibility without causing glare. It requires specific modulation rates (240±40 cycles per minute), minimum intensity levels (17% of max), and safety features like dual beam operation during failures. Aftermarket modulators must be labeled with wattage ranges and meet all technical specifications when tested at both maximum and minimum power. The bill also permits certain auxiliary lights (like LED strips or running lights) but requires them to be non-blinking, non-flashing, and directed away from the rider to prevent interference.