To get out a booster seat you have to be at least 4 feet 9 inches
Not until the seat belt will fit properly without use of a booster seat.
you have to be 136cm or over
It depends, as they need to fit the weight and height requirements specified in your vehicle manual, to sit in a seat unassisted. Unless there is a local bylaw requiring people of a certain age, height or weight either to sit in a booster seat, or not in a booster seat.
When they are around 2 and have outgrown their child seat. They should continue to use a booster seat until they reach the height of 4 foot 9.
135
i believe 4,5
The AAP instructs to go by height, not weight now (2010) -- a minimum height for a child's no longer needing a booster seat is four feet, nine inches. 4'9."
Eight
I do believe you have to be eight years old or 4 feet.
When they about the height of 4'9".
the age in cairns is 8 but i do not no the age
At the age of 8, children can sit in the back seat without a booster seat. They do need to have a seat belt; however, and not be in the front. They need to be securely fastened as well.