Subaru 2015 BRZ Owner's Manual page 92

All signs are displayed in the same manner even when driving without
using the navigation system. During navigation, only the sign that
shows the lane in which you should drive is highlighted, the other signs
are toned down.
■
Junction display
When approaching an expressway exit or a complicated intersection,
the map switches to a 3D display if the necessary information can be
displayed. An arrow indicates the lane in which you should drive. Signs
are also displayed if the information is available.
■
Types of 3D Objects
The following 3D object types are supported.
Type Explanation
3D Topography On a 2D map, the changes in topography or
undulations in the ground are displayed; and
when using 3D this data is used to create a
route map image during navigation. On a 3D
map, hills and mountains are displayed in the
background, whilst on a 2D map they are
expressed using changes in color and shading.
Elevated Roads Complicated intersections and three
dimensional road objects (such as overpasses or
overhead bridges) are displayed in 3D.
Read First
Navigation 91