Every current installed navigation system uses the car as a fixed point, and shows the map moving around it. NHTSA wants that changed so as to keep the map fixed. Even showing the position of the car moving on the map could be considered a dynamic image. The recommendation seems to suggest that the position of the car could only be updated every couple of seconds. Likewise, the map could be refreshed once the car has left the currently displayed area.
This recommendation would essentially make navigation unusable. The system could still give an auditory warning for the next turn, but without being able to glance down at the map and see how close the next street is would likely lead to a lot of missed turns and resultant frustration."
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