The driver of a vehicle on a public road shall, when he or she intends entering any portion of a public road which constitutes a junction of two or more public roads where vehicular traffic is required to move around a traffic island within such junction, yield the right of way to all vehicular traffic approaching from his or her right within such junction, unless his or her entry into such junction is controlled by an instruction given by a traffic officer or a direction conveyed by a road traffic sign requiring him or her to act differently.