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Scooters - Noisy goods
E-scooters set to have alerts fitted to warn pedestrians of their approach
E-scooters will now make warning noise after concerns over danger to pedestrians - Liverpool Echo
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Silent' e-scooters fitted with artificial noise to warn pedestrians - Cities Today
Electric scooter warning noise research sounds note of optimism | E&T Magazine
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Bangkok's noisy streets could get quieter with new electric motorbike trial
Scooters may be the next EV to get a universal warning noise