Method, apparatus and program product are provided for controlling the number
of symbols presented on an vehicle electronic map display by using a first threshold
constant for the number of symbols to be presented in FULL detail and a second
threshold constant for the number of symbols to be presented in MINIMUM detail.
In a first embodiment, the total number of selected symbols is compared to the
threshold constants for each symbol type. In a second embodiment, the number of
symbols of each type is compared to the respective threshold constants for each
type. Excessive map clutter is avoided without regard to the map range selected
by the user and for both high density and sparse map regions.