2025 House Bill 4597

Traffic control: speed restrictions; establishment of speed limits by local governments; allow.

A bill to amend 1949 PA 300, entitled “Michigan vehicle code,” by amending section 628 (MCL 257.628), as amended by 2024 PA 33.

AI Analysis – Experimental

House Bill No. 4597 grants Michigan local governments expanded authority to set and enforce speed limits on local highways with law enforcement approval and public input, removing the requirement for engineering studies and the eighty-fifth percentile rule, while mandating oversight and best practices for safety.

Introduced in the House

June 10, 2025

Introduced by Rep. Josh Schriver (R-66) and eight co-sponsors

Co-sponsored by Reps. Cameron Cavitt (R-106), Greg Markkanen (R-110), Karl Bohnak (R-109), Carrie Rheingans (D-47), Jennifer Wortz (R-35), Matt Maddock (R-51), Rachelle Smit (R-43) and Jaime Greene (R-65)

Referred to the Committee on Transportation and Infrastructure