Directed acoustic beams let autonomous vehicles warn specific pedestrians or drivers with clearer, more localizable alerts and less social friction.
Closed-section tubular reinforcements around an annular recess deform under load to resist folding and preserve tire integrity after pressure loss.
Filters synthesized sound from microphone input so vehicle warning audio stays above traffic noise without causing nuisance or runaway gain.
A vehicle approach alert device corrects voltage levels based on speaker temperature to maintain consistent sound pressure output.
A tire tread uses a durable center bar and soft lugs to adapt contact area via inflation pressure changes.