After driving this road many times, I noticed that you can tell what province you're in by what's in the middle of the road. In Limburg, there is a concrete barrier. In Brabant, there's grass and a metal barrier. The changeover happens pretty much exactly at the province border.
No. This highway was built in the 60's through the Leenderheide. Diverting the highway would mean more cost and it would mean a whole restructuring of the network around Eindhoven.