Uniden IGO500 Owner's Manual page 122

You can use digital maps interactively: you can zoom in and out (increase or
decrease the scale), you can tilt them up and down, and rotate them left and right.
In GPS-supported navigation, digital maps facilitate route planning.
North-up map orientation
In North-up mode the map is rotated so its top always faces North. This is the
orientation for example in Find on Map. See also: Track-up map orientation.
Road Safety Camera
Special alert points for speed, red light or bus lane cameras. Different data
sources are available. You can configure the software to warn you when you
approach one of these cameras.
Detecting the location of Road Safety Cameras is prohibited in certain countries.
It is the sole responsibility of the driver to check whether this feature can be used
during the trip.
Route
A sequence of route events, i.e. manoeuvres (for example, turns and roundabouts)
to reach the destination. The route contains one start point and one or more
destinations. The start point is the current (or last known) position by default. If you
need to see a future route, the start point can be replaced with any other given point.
Town/Suburb Centre
The Town/Suburb centre is not the geometric centre of the settlement but an
arbitrary point the map creators have chosen. In towns and villages, it is usually the
most important intersection; in larger cities, it is one of the important intersections.
Track-up map orientation
In Track-up mode the map is rotated so its top always points in the current driving
direction. This is the default orientation in 3D map view mode.
Vehimarker
The current position is shown with a blue arrow on the map by default. The direction of
the blue arrow shows the current heading. This position marker can be replaced with
different vehicle and pedestrian symbols. You can even specify different Vehimarkers for
different route types (depending on which vehicle type is selected for route calculation).
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