The Drenthe circuit is AFAIK part public roads (i.e., public park) and part dedicated racetrack.
In the past, the World Superbike guys loved the place, and the 500cc GP guys hated it. It nearly ended 5-time 500cc World Champ Mick Doohan's career, and nearly cost him his leg. Now that it's been modded, they're all crying. Regardless, in the past, it's always been an exciting race to watch...lot's o'crashes!
Understood about the van preposition...I understand it means from/of...same as von in German.
They're officially calling the race the A-Style Dutch TT Assen. AFAIK, it's always been referred to as the Dutch TT...it's the oldest race on the calender and dates back to the first year of the modern (i.e., post war) GP-era: ca. 1948-49.
While I'm sure it's nuts...The European version of Daytona, sans the Harley contingent PLUS a MGP race instead of AMA Superbike...I'd like to go one of these days. Ditto for Donnington, Jerez and Misano.
I'm retiring in the next ten years so riding Europe...from race to race...is a definite goal for me.