If it were "only" a human then the radar would have a hard time seeing the person. But the bicycle is a substantial chunk of metal which should give much strong

If it were "only" a human then the radar would have a hard time seeing the person. But the bicycle is a substantial chunk of metal which should give much stronger echo. And a 10 kg. metal object placed in the path of an autonomous car should cause all kinds of emergency measures to engage. Many high end cards have auto braking systems based on radar (and additional sensors). Mercedes even has a similar scenario on their product page [1] Volvo does so too, as far as I could find. So not only did they not detect the obstacle with two different sensor technologies they may have deactivated the already existing safety features in that car as well. [1] https://www.mercedes-benz.com/en/mercedes-benz/innovation/on-the-radar-screen-recognising-risks-automatically/ https://www.mercedes-benz.com/en/mercedes-benz/innovation/on...