ANSWERS: a.) A lot of people don't seem to know; however, when I finally called the State Police this is what they said: 8 years old or 57 inches.
The "or" statement got me. I asked the State Police Officer what he would do if his son was 8 years old but only 53 inches? He said, he would keep his child in the booster seat until he was at least 57 inches.
--End of Question.
Further research showed: (as of 5/31/18)
"Chapter 3: Safety First also covers the Child Passenger Restraint Law in Massachusetts. Important points include:
MsRubinChats' gentle comments:
1.) I believe it should read: "...a child 8 years old AND at least 57 inches tall must....not or.
Resources: (All links open up in a new window, please look at the tabs to go back to this page.)
https://www.dmv.org/ma-massachusetts/safety-laws.php (dtd: 5/31/18)
Ms RUbin Chats