Final refinements developed during the May 2019 GRSP session to the proposal to include booster cushion categories within the scope of the 03 series of amendments to UN R129 (Supplement 3 to the 03 series).

Proposal to clarify the chest Z axis measurement requirement.

Proposal to clarify the definitions of integrated and detachable head restraints.

Proposal to clarify that the warning signal to alert a driver of an M₂ or M₃ vehicle with more than 22 seating positions if the vehicle is in active-driving-possible mode when the driver leaves the seat shall be activated upon leaving the seat, not the vehicle.

Proposal to introduce objective criteria for evaluating whether a door remains latched following the pole impact test. Under UN R135, rear doors on the impacted side of the vehicle not directly struck by the pole may nonetheless be subjected to heavy loads and therefore need to be assessed. This proposal corresponds to a similar clarification already introduced into UN R95 on side impacts.

Vehicle Thermal Response to Runaway GTR Phase 2