Abstract: The field of the invention is that of optoelectronic taxiing-aid devices for aircraft, comprising a so-called head-up display enabling information to be presented in the visual field of the pilot. It applies more particularly to large civilian aircraft of the Boeing 747 or Airbus A380 type. The purpose of the invention is to present, in the display, a set of ergonomic symbols for informing the pilot of the path to be followed in a turn and the exact situation of his vehicle on the taxiway, enabling him to taxi in total safety, including in bad weather conditions. These symbols comprise lateral safety marks, represented by posts of variable height, representing the limit of the taxiway, positioned at regular intervals and located either side of the center line of the taxiway and equidistant from the latter. When the taxiing conditions are such that these posts are no longer visible in the display, a view from above of the situation of the aircraft on the taxiway is displayed.