S.D. Admin. R. 70:09:01:07
The area engineer may require a traffic impact study with any application for access to a property that will generate one hundred or more peak hour trips. A peak hour trip means the movement of one vehicle to or from a point during the hour of a typical day containing the maximum vehicular volume on the street. The area engineer shall determine the scope of the study, considering probable operational and safety impacts to the general street system. The study must determine what improvements may be necessary to maintain arterial level of service "C", as defined in the Highway Capacity Manual, Seventh Edition, under the traffic conditions expected with the proposed development under consideration. A professional engineer with specific experience in traffic operations analysis shall perform the study. The study must be sealed by a South Dakota registered professional engineer. The study must examine the functional relationships among existing, planned, and potential access points and must use policies and design manual standards and guidance jointly determined by the department and the applicant.
S.D. Admin. R. 70:09:01:07
General Authority: SDCL 11-3-12.2.
Law Implemented: SDCL 11-3-12.2.
Highway Capacity Manual, Seventh Edition, 2022, Transportation Research Board of the National Academies of Sciences, Engineering, and Medicine. Copies may be obtained at: https://nap.nationalacademies.org/catalog/26432/highway-capacity-manual-7th-edition-a-guide-for-multimodal-mobility. Cost: $250.