Relating to diesel fuel; prescribing an effective date.

Establishes timeline for restrictions on sales of petroleum diesel for use in motor vehicles. Establishes timeline for restrictions on purchase of petroleum diesel for use in motor vehicles by public bodies. ] Directs State Department of Agriculture to suspend enforcement of restrictions if supply of renewable diesel is determined to be insufficient to meet anticipated demand. ] Directs State Forestry Department to study feasibility of converting lignocellulosic biomass derived from invasive tree species into renewable diesel feedstocks. ] Establishes Task Force on Renewable Diesel. Directs task force to study availability of renewable diesel, estimate current and future demand for diesel fuels, study incentives for increasing availability of renewable diesel and study implications of removing petroleum diesel from state marketplace. Sunsets January 2, 2023. Takes effect on 91st day following adjournment sine die.