Car Seat Laws in Massachusetts
Massachusetts requires children to meet BOTH the age and height requirements (age 8 AND 57 inches) before leaving a booster.
Rear-Facing
Until age 2 or RF seat limit (strongly recommended)
State law requires rear-facing for children under 1 weighing less than 20 lbs
Forward-Facing
Age 2–7 or FF seat limit; under 8 and 57 inches must use a car seat or booster
Harnessed seat required
Booster Seat
Until age 8 AND 57 inches (4'9") tall
Booster required until BOTH conditions are met
Seat Belt Only
Age 8+ AND 57 inches; all occupants under 16 must be restrained
Seat belt must fit properly across chest and hips — not across the neck
Fine for Violations
$25–$50 per violation
⚠️ Law vs. AAP Recommendations
State law sets the legal minimum. The American Academy of Pediatrics (AAP) recommends keeping children rear-facing as long as possible within the seat's weight and height limits — often beyond the legal minimum age. Always follow the seat manufacturer's guidelines and AAP recommendations for maximum safety.
📋 Legal Source
Massachusetts General Laws Chapter 90 §7AA