About The 30 km/h zone: where it lies, and why its end has no fixed rule: which statement is WRONG?
The end of a 30 km/h zone is not always an uitrit; it can be an ordinary equal-priority junction where traffic from the right has priority.
In a 30 km/h zone, just like on a woonerf, a maximum speed of 15 km/h applies.
The entrance to a 30 km/h zone is often an inrit/uitrit; when entering you must then give way to all road users, just like at any other inrit.
Explanation
trap: figure swapped between two zone types. Book p.90 - a 30 km/h zone is named after its maximum speed, 30 km/h, not 15. The 15 km/h belongs to the woonerf, a different type of area