MI HB4418

Amends Michigan's vehicle weight and axle load regulations under the Motor Vehicle Code to modify exemptions from seasonal weight restrictions.

Adds maple sap to the definition of "agricultural commodities," allowing vehicles transporting maple sap to qualify for seasonal weight restriction exemptions.

Clarifies exemptions for agricultural commodity transport, public utility vehicles, and propane fuel delivery vehicles during seasonal road restrictions (March, April, May).

Establishes permit and notification requirements for agricultural commodities and public utility work on restricted roads, with county road commissions issuing permits and charging fees not exceeding administrative costs.

Effective July 4, 2016, with provisions allowing the state transportation department and local authorities to designate highways for heavier loading when road conditions permit.