Ever found yourself totally confused by the door noises on the MTR? Nope, us neither, but apparently there’s a need to produce posters explaining them.

The new public service stickers declare: “When you hear “DING-DONG”, please let passengers exit before boarding”, and “When you hear “DO-DO-DO”, please stop”.
Seems a bit obvious, right? Having said that, the more ways to try and stop people being assholes on the MTR, the better.
H/T: Google+ user dolma hongkong
