Revised proposal to allow alternative test methods for heavy duty vehicles in order to improve applicability of the requirements to vehicles of categories M₂, M₃, N₂ and N₃, superseding GRSP/2021/12.

Revised proposal to allow alternative test methods for heavy duty vehicles in order to improve applicability of the requirements to vehicles of categories M₂, M₃, N₂ and N₃, superseding GRSP/2021/12.

Proposes alternative test methods for heavy duty vehicles in order to improve applicability of the requirements to vehicles of categories M2, M3, N2 and N3.