https://www.abc15.com/longform/lyft-uber-car-seat-law

This is a problem where both drivers and their parent passengers are to blame.
In Arizona, state law requireschildren younger than 8 years old or less than 4 feet 9 inches tall to sit in a proper child safety seat. The purpose of this investigation was to see whether drivers for Uber and Lyft are breaking that law after a rideshare driver contacted the station to raise the concern.
Robert Burgess, who drives for both Uber and Lyft, sees it all the time.
This is a problem where both drivers and their parent passengers are to blame
He captured video on his dashboard camera of an incident at Sky Harbor Airport in October.
The video shows a Lyft driver picking up a woman and baby. As the driver takes the child's stroller and gets ready to put in the trunk, Burgess and an airport traffic coordinator approach the driver.
Burgess said the two are telling him he can't give a ride to the woman and child without a car seat. But the driver takes off anyway.
The video highlights that this is a problem where both drivers and their parent passengers are to blame.
Burgess said the vast majority of parents with small children he goes to pick up, "nine times out of ten," don't have the proper equipment.
When he turns them away, they often complain.
"'All of the other drivers do it' is a common statement," he said.
Via Uber: When you open the Uber app, select UberX and then the "Car Seat" option. Vehicles arrive with one forward-facing car seats and two booster seats. Your childmust be at least 12 months old, weigh 22 pounds, and be 31 inches tall to ride safely in the forward-facing seat.
Uber Car Seat provides uberX vehicles equipped with a car seat.
To request Uber Car Seat, tap the 'car seat' option after selecting the uberX vehicle type. A $10 surcharge is added to uberX pricing for Uber Car Seat trips.
A child is too big at 48 lbs. or 52 inches.