Section 43-2-136 - Department makes rules for rating(1) The department of transportation shall promulgate and adopt rules and regulations for a practical system of rating roads, streets, and highways based on sufficiency rating studies for the systems under its specific jurisdiction as follows:(a) Priorities for construction on the state highway system as designated by this part 1 shall be determined by the transportation commission not later than May thirtieth of the year preceding the year during which said construction is to be undertaken.(b) The transportation commission in establishing priorities shall make use of a sufficiency rating which shall take into consideration traffic volume, composition of traffic, width of the roadbed, pavement type, and such other construction factors as it deems necessary in order to adequately compare existing highway facilities with the known desirable standards for highways which should apply.L. 53: p. 528, § 36. CRS 53: § 120-13-36. C.R.S. 1963: § 120-13-36. L. 91: Entire section amended, p. 1106, § 148, effective July 1. For rule-making procedures, see article 4 of title 24 .