The bill amends the Michigan Vehicle Code, specifically section 628, to clarify the process for establishing speed limits on county highways. It allows the county road commission, township board, and department of state police to unanimously determine and set reasonable maximum or minimum speed limits based on engineering and traffic investigations. The bill introduces new provisions that enable township boards to petition for changes in speed limits without requiring a speed study, and it specifies that a public record of any traffic control order must be filed with the county clerk. Additionally, it defines the role of the county road commission and local road authorities in determining speed limits and mandates that speed limits must be based on traffic engineering practices.

Key changes include the removal of references to "limited access freeway or state trunk line" and the insertion of language that allows speed limits to be set below the eighty-fifth percentile speed under certain conditions, such as the presence of public safety hazards. The bill also emphasizes that speed limits must be rounded to multiples of 5 miles per hour and establishes that individuals violating these speed limits are responsible for civil infractions. Overall, the amendments aim to enhance public safety by providing a more flexible and responsive framework for speed limit regulation on county highways.

Statutes affected:
House Introduced Bill: 257.628