A. You must give way to vehicles on your right at uncontrolled crossroad intersections (such as the ones in the image). The vehicle travelling from right to left must give way to the vehicle travelling down the page vertically.
B. Similarly to (A), you must give way to vehicles on your right at an uncontrolled crossroad intersection, so the vehicle travelling from left to right must give way to the vehicle turning right.
C. The vehicle at the bottom of the image must give way to the vehicle on its right, travelling down the page and turning right.
D. The vehicle turning right must give way to the car travelling straight down the page.
For those who have forgotten, an uncontrolled intersection is one without a stop or give way sign. Fairly rare in suburbia these days but can be common in country areas.
