Proposal from the Working Party “Brussels 1952” (GTB) to introduce a new category of amber dual-filament light sources PY21/5W into UN R37.

Proposal from the Working Party “Brussels 1952” (GTB) to clarify color measurement requirements.

Proposal from the Working Party “Brussels 1952” (GTB) to revise paragraph 5.23 to clarify the requirements on the replacement of light sources approved according to UN R37.