Motor Vehicle Restraint Systems and Booster Seats Safety Regulations

Marginal note:ASTM D3574-08

408 After the application of a preload of 175 N to the booster seat, the booster seat, including any padding or covering, must not deflect more than 25 mm under the application of a vertical force of 2 250 N applied anywhere on the upper seating surface of the booster seat through the apparatus described in section 17 of ASTM D3574-08, Standard Test Methods for Flexible Cellular Materials — Slab, Bonded, and Molded Urethane Foams, published by ASTM International.