Drove on a toll road to Niš. Looks decent. Speed limit is 130, but a lot of people drive much faster. Just to be safe, I checked the map — it definitely wasn't a German Autobahn.

There were construction zones more often than I would've liked. Four lanes turn into two, the median disappears, and the speed limit drops to 80 (actually even lower in practice, thanks to the trucks and buses). When you're driving there, you start wondering why they're charging you for this :(

The only consolation is that the toll is relatively cheap. I drove two sections of about 100 km each and paid 700 dinars (~6€) total.