[Code of Federal Regulations] [Title 25, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 25CFR170.123] [Page 531] TITLE 25--INDIANS CHAPTER I--BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR PART 170_INDIAN RESERVATION ROADS PROGRAM--Table of Contents Subpart B_Indian Reservation Roads Program Policy and Eligibility Sec. 170.123 What are seasonal transportation routes? Seasonal transportation routes are non-recreational transportation routes in the IRR Inventory that provide access to Indian communities or villages and may not be open for year-round use. They include snowmobile trails, ice roads, and overland winter roads.