How Hong Kong and Singapore deal with uncivilised behaviour

Singapore has begun enforcing new rules on public buses, with behaviours such as playing phone audio out loud, putting feet on seats, eating or drinking, and littering carrying an on-the-spot fine of up to S$500 (US$390), in line with existing passenger rules on the local MRT. Hong Kong's MTR introduced similar rules years ago, and the two places take the same approach.