Bus and train fares in Singapore will go up by 10 cents per journey for adult commuters from Dec 28. How are public transport fees calculated and what is the role of government subsidies? Steven Chia and Crispina Robert get Assistant Professor Terence Fan from the Lee Kong Chian School of Business at the Singapore Management University, and Dr Raymond Ong, from the Department of Civil and Environmental Engineering at NUS to explain.   See omnystudio.com/listener for privacy information.