Traffic control: traffic regulation; seasonal weight restrictions; revise exemption for tow truck, wrecker, or road service vehicles under certain circumstances. Amends sec. 722 of 1949 PA 300 (MCL 257.722).

Added exemptions allowing natural gas and electric vehicles with gross weight of 82,000 pounds or less to exceed standard axle loading maximums by up to 2,000 pounds total.

Modified emergency public utility work procedures to allow notification via facsimile or electronic means and added provisions for nonemergency work requiring seasonal permits.

Expanded definition of agricultural commodities to explicitly include maple sap, farming equipment, and fuel for agricultural use, while clarifying that trees and lumber are excluded.

Added new definitions for 'farm storage' (including silos, bins, and open environments) and 'transmission company' referencing electric transmission line certification act.

Added requirements for seasonal truck permits for public utility vehicles, including unique identification numbers, seasonal validity periods, and signage requirements for subcontractors.

Modified seasonal weight restriction exemptions to explicitly include propane delivery vehicles traveling at 35 mph or less with tanks filled to 50% capacity or less.