Collision Avoidance Systems Act of 2025

Allows pulsating high-mounted stop lamps on covered vehicles. This bill would deem Federal Motor Vehicle Safety Standard 108 to permit a pulsating light system on passenger cars, multipurpose passenger vehicles, trucks, buses, trailers, and motorcycles. It defines a pulsating light system as a high-mounted stop lamp that pulses rapidly no more than four times and for no more than 1.2 seconds when the brake is applied, then converts to a continuous stop lamp until the brake is released. Pulses may not repeat for at least five seconds after brake release. The Secretary of Transportation would have 180 days to issue performance-based regulations to update Standard 108 and allow use of these systems.