When crossing borders if would be interesting to have a little popup infobox appear on the screen which summarizes the different speeds allowed in the country to which you have crossed the border to.

For example when i'm driving from Luxembourg to France, when crossing the border into France, i would get the info that
1) on Tolled Freeways the max speed is 130 kph
2) Non Tolled Freeways max speed 110 kph.
3) Minor Highway 80kph and etc.

When i drive into Germany.
1) Freeway 130 kph
2) Minor highway 90 kph
3) in the city 50 kph