The first line indicates the distance traveled since entrance into the zone.
Information about average speed in the average speed camera area stretch.

Depending on their colors, it tells you if your average speed is correct or not.
If the indicator is green, the speed is less or equal to speed limit.
If the indicator is orange, average speed is above speed limit, but less or equal ti the maximum average speed.
If the indicator is flashing red or red color, the average speed is greater than maximum average speed.
You should slow down!
Vehicle speed information.

The different colors are described on the "Buttons zone" screen.