The roads are clear here too. It's bluddy cold though. I saw a small car (one of the 'moped cars' with a teeny engine that requires no proper driving licence) driving across the ice on the dog-leg shaped dead-end remnant of river called the Binnenmaas by the mill this morning. And a quad-bike doing power-slides and throwing up powdered snow on the ice too.
[Pen] This is a serious question as frozen rivers are a rarity where I live. How do the drivers of such vehicles (or even skaters and skiers for that matter) know that the ice is sufficient to carry their distributed weight? It sound rather fraught to me.