The Uber info I read says it is our discretion to take with or without car seats. But the law has seemed to side on the required car seats. I bought two backless child booster seats. The very next day a woman ordered a ride with two small children. I had one for each and the mother sat in the front. I have applied these seats on three rides since. I am feeling good about the purchase. I do not face conundrums about whether I should or shouldn't and it pays for itself in multiples over time. I do not struggle, I do not sweat. I put them into use. The adult responsible does the buckling of the kids. Done.