Here's a 2002 pediatric journal paper that comes to the same conclusion: https://www.researchgate.net/publication/5457713_Effects_and_Costs_of_Requiring_Child-

Here's a 2002 pediatric journal paper that comes to the same conclusion: https://www.researchgate.net/publication/5457713_Effects_and_Costs_of_Requiring_Child-Restraint_Systems_for_Young_Children_Traveling_on_Commercial_Airplanes/link/552e911d0cf2d4950719b61e/download https://www.researchgate.net/publication/5457713_Effects_and... "Results of this study show that requiring CRSs on airplanes would prevent few airplane crash deaths and might cause an increase in motor vehicle deaths if many families switched to travel by car rather than paying additional fares for their young children. Irrespective of that possibility, the cost of the regulation per death prevented would be high­about $1.3 billion if the price of the round-trip ticket for the young child were $200.These findings suggest that a policy requiring CRSs on airplanes would be a poor use of societal resources."