The Air Resources Board proposed to amend motorcycle emission standards and test procedures and to adopt new on-board diagnostics and zero emission motorcycle requirements. The amendments and adoptions would, among other things, establish a legally binding framework to transition toward zero emission motorcycle sales in California and reduce emissions from remaining internal combustion-powered vehicle sales by aligning with European Union 5 exhaust emission standards, imposing more stringent evaporative emissions standards, and adopting additional on-board diagnostic requirements. A hearing will be held January 25, 2024. Comments are due January 16, 2024. See https://oal.ca.gov/wp-content/uploads/sites/166/2023/12/2023-Notice-Register-Number-48-Z-December-1-2023.pdf (pp. 1566-79).