(a) General rule.--When two vehicles approach or enter an 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.
(b) Exception.--The right-of-way rule established in subsection (a) is not applicable:
(1) on through highways, where the traffic on the through highway shall have the right-of-way;
(2) on limited-access highways, where the traffic on the limited-access highway shall have the right-of-way;
(3) in traffic circles, where the traffic in the traffic circle shall have the right-of-way; and
(4) as otherwise provided in this part.