(A)   When two vehicles enter or approach an uncontrolled intersection from different highways at approximately the same time, the driver of the vehicle on the left shall yield the right-of-way to the vehicle on the right as otherwise stated in this chapter; however, the driver of vehicle on a street which is not a state or federal highway approaching an intersection with a state or federal highway shall stop and yield the right-of-way to a vehicle which has entered the intersection or which is so close thereto as to constitute an immediate hazard.
   (B)   The right-of-way rule declared in division (A) of this section is modified at through highways as otherwise stated in this chapter.
(47 O.S. § 11-401)  (`83 Code, § 15-545)  Penalty, see § 71.999