Minn. Stat. § 16C.137
Subd. 1. Goals and actions.
(b) To meet the goals established in paragraph (a), each state department must, whenever legally, technically, and economically feasible, subject to the specific needs of the department and responsible management of agency finances:
(1) ensure that all new on-road vehicles purchased, excluding emergency and law enforcement vehicles:
Subd. 2. SmartFleet Committee.
Subd. 3. Exclusion.
Petroleum-based diesel fuel used in a vehicle which a department has retrofit to use ultra low sulfur diesel fuel and to add additional emissions control technologies is excluded when evaluating progress toward the reduction goals established in subdivision 1. This exclusion applies only to vehicles purchased before the model year in which the federal Environmental Protection Agency's new clean diesel emission reduction rules take effect.