what is the weight requirement for booster seats in california?
my cousin is visiting and she is 45 lbs. what is the requirement for a booster seat, and will she need one?
In California, car seat laws err further on the side of caution than many other states. California state law requires children to ride in a federally approved baby car seat or child booster seat until they are at least 6 years old or weigh at least 60 pounds. California also requires children under age 16 to be buckled up with a seat belt.

In California, car seat laws err further on the side of caution than many other states. California state law requires children to ride in a federally approved baby car seat or child booster seat until they are at least 6 years old or weigh at least 60 pounds. California also requires children under age 16 to be buckled up with a seat belt.
References :
Law Enforcement & Investigations. Accident Investigator.