Challenge: Maximum speeds per road type: the five-rung ladder

Most candidates know exactly one number well: 50 km/u in the built-up area. As soon as the CBR question brings in a woonerf, a 30 km-zone, or an autoweg, they paste that same 50 onto it — or 80, 'because outside the built-up area it's always 80, right?'. The book does not have two numbers, it has five, each tied to its own road type.