Collision Avoidance Systems Act of 2025

This bill clarifies that existing vehicle safety standards (Standard 108) already permit "pulsating light systems" - brake lights that briefly flash rapidly (up to 4 times for ≤1.2 seconds) before switching to steady illumination - on vehicles covered by the standard. It requires the Transportation Secretary to update Standard 108 within 180 days to formally include performance-based rules for these systems. The change directly affects vehicle manufacturers and safety regulators by explicitly allowing and standardizing this specific braking light technology. The bill does not alter current safety requirements but updates regulations to reflect permitted technology.