A new study out of the University of Michigan shows some parents could be cutting corners when it comes to carpools and child safety seats.
Researchers found more than 30% of parents do not enforce booster seat rules when their kids are with another driver.
And 45% of parents do not require their little ones to use a booster when they're driving other children who don't have booster seats.
Scientists say it could be that car overcrowding and lack of time to coordinate booster seat switch-offs are to blame.
But it's against the law. Most states require children to use a booster seat up to the age of eight.
Results of the study were published online in the journal Pediatrics.
Do you always follow booster seat and child seat laws when you carpool? How about when your son or daughter rides with another parent? Post your comments below.