Modern automotive radar systems operating in the 77-79 GHz frequency band can detect objects through heavy rain, fog, and snow because water droplets are actually transparent to millimeter-wave signals, yet ironically these same radars occasionally fail to detect stationary objects like parked cars or barriers because their processing algorithms are optimized to ignore non-moving targets—a design choice that has contributed to several high-speed collision incidents that revealed a fundamental blind spot in how autonomous safety systems categorize threats.
Car Fact #35 — July 21, 2026
