CONTROLLING THE OPERATION OF A HEAD-UP DISPLAY APPARATUS

A method () of controlling the operation of a head-up display apparatus (), a control apparatus (), a system (), a vehicle (), a computer program () and a non-transitory computer readable medium () is disclosed. The method () comprises: obtaining first directional data indicative of a path of a vehicle (A, B); and adjusting the position of a graphical element () presented by the head-up display apparatus () in dependence on the first directional data.