Mr Moiz Tyebally (Cut down on announcements at MRT stations and in trains too; Dec 28, 2017) and Ms Liu I-Chun (Lower noise level in buses; Jan1) complained about noise in public transportation, such as the safety warning beeps of door closures in buses.
These beeping sounds help people with hearing difficulties and is a good feature.
Accidents have been known to happen.
People have kept quiet about the beeping sounds because they understand that it helps those with hearing difficulties in a noisy environment.
Wong Choy Siong