No free rides on bus and trains without this card. Yes, Yining’s only 4 and a half, but according to the regulations, she needs this child concession card because she’s more than 90cm tall.
More details here : http://www.transitlink.com.sg/PSdetail.aspx?ty=art&Id=4#2
She’s pretty pleased with it. Now she has her own card to tap when taking public transport.