请问多大的孩子，多重就可以不用booster，直接坐大人的座位了。

home_ed

如题。谢谢。

linger0310

5岁。

flyjade

When can a child start using a seatbelt alone?
A child can start using a seatbelt alone once any one of the following criteria is met:

Child turns eight years old
Child weighs 36 kg (80 lbs.)
Child is 145 cm (57 ins. or 4 ft. 9 ins.) tall
As a guide, a seat belt may only be used if a child is able to sit with legs bent comfortably over the vehicle seat and with his or her back fully against the back of the vehicle seat. The shoulder belt must lie flat across the child's shoulder and chest, and should not cross over the child's neck. The lap portion of the belt should be positioned low over the hips, not the abdomen.

Rapala

3.5 year old, my boy.

wpbaby

我家的从去年四岁就嚷着要坐在前面，看邻居家五岁的孩子这样做了，今年5岁了也就开始坐前面了。。。不过看来上面三项每项都没达标啊。。。

flyjade

坐booster 的要求是:
4 岁 + 40 lb + 100cm
我儿子体重没有达标, 偷偷地给坐上booster le.

home_ed

谢谢同学们热烈讨论。但还是要注意安全呀，尤其是在高速路上。而且听说最好应该以身高和体重为标准而不是年龄。