A pilot demystifies the "ding" sound heard on airplanes. It's not an alarm, but a signal for the crew. One ding signifies takeoff clearance, another at 10,000 feet allows cabin service to begin, and ...
Transport for London (TfL) could be bringing back the original Routemaster sound to indicate when a bus is about to depart. The old 'ding ding' sound is also being trialled with other sounds to see ...
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