When two cars from different roads arrive at an uncontrolled intersection (not a T-intersection), the car on the left must give way to the car on the right. It does not matter which direction any of the vehicles turn. Here car A is to the right of car B, so car B must give way. [Give way at an intersection (except a T-shaped or circular intersection), Intersections, Part C - Knowing the rules of the road, ACT Road Rules Manual ]