Idaho Statutes Title 49. Motor Vehicles § 49-640. Vehicles approaching or entering unmarked or uncontrolled intersection

(a) At “T” intersections where one (1) highway ends when it meets a second highway not ending at that point of convergence. When two (2) vehicles approach or enter a “T” intersection from different directions at approximately the same time, the driver of the vehicle on the highway ending at the intersection shall yield the right of way to the other vehicle;

(b) At through highways; and

(c) Otherwise as stated in this title.