this is the extract from spf website:
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Change in criterion to determine use of child restraints and booster seats
Currently, a child below the age of 8 is required to be properly secured with an appropriate child restraint or use a booster seat cushion to supplement the seat belt while travelling in a vehicle. Those above the age of 8 are required to put on seat belts.
From 1 January 2012 , age will no longer be used as a criterion to determine if child restraints or booster seats are required. Anyone below the height of 1.35m will be required to be secured with a child restraint appropriate for a person of that height and weight, use a booster seat to supplement the seat belt or an adjustable seat belt. Those with a height of 1.35m and above, irrespective of their age, will be required to wear a seat belt. This change in criterion was made in consultation with the Ministry of Health and following a review of international standards and practices. This threshold height is found to be more suitable in deciding the proper fitting of seat belts and also consistent with current practices in countries such as the United Kingdom , Netherlands , Sweden , Finland , and Belgium.
To ensure that those affected by this change have sufficient time to obtain the required booster seats, child restraints and adjustable seatbelts, a grace period of one month will be given. For the month of January 2012, Traffic Police officers on patrol will offer advice to motorists instead of taking enforcement action when they come across those who are below 1.35m who fail to use a booster seat, child restraint or adjustable seatbelt.
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