Vehicles approaching or entering intersections.

(1) The driver of a vehicle approaching an intersection shall yield the right-of-way to a vehicle which has entered the intersection from a different highway.

(2) When two vehicles enter an intersection from different highways at the same time the driver of the vehicle on the left shall yield the right-of-way to the vehicle on the right.

(3) The driver of a vehicle about to enter or cross a state-maintained road or highway from a paved or unpaved road and not subject to control by an official traffic control device shall yield the right-of-way to all vehicles approaching on the state-maintained road or highway.

(4) The driver of a vehicle about to enter or cross a paved county-maintained or city-maintained road or highway from an unpaved road or highway and not subject to control by an official traffic control device shall yield the right-of-way to all vehicles approaching on said paved road or highway.

(5) The foregoing rules are modified at through highways and otherwise, as hereinafter stated.

(6) A violation of this section is a noncriminal traffic infraction, punishable as a moving violation as provided in chapter 318.