Senate Bill 390 aims to amend specific provisions of the 2025 Wisconsin Act 15 to correct errors and clarify legislative intent. Notably, the bill changes the effective year for certain registration plate fees from 2026 to 2025, ensuring consistency with the intended implementation date. Additionally, it corrects a cross-reference in the effective date provision related to heavy vehicle registration fees, updating the reference from subsection (2) (c) to (q) to (2m).

Furthermore, the bill proposes an increase in the appropriation for the Joint Committee on Finance by $2,600,000 for the fiscal year 2025-26. This additional funding is designated for the Department of Transportation to support the public protective services hearing protection program. Overall, the bill serves to rectify legislative discrepancies and enhance funding for public safety initiatives.