Driving exam statistics show that using outdated materials is the #1 reason English speakers fail. Here’s what to check before trusting any PDF:

The German driving license (Klasse B) is recognized for its high standards. The theoretical exam consists of 30 to 40 multiple-choice questions drawn from a massive official catalog. If you attempt this in German with only A2 or B1 level skills, you risk misinterpreting "Vorfahrt" (right of way) and failing instantly.

Lehrbuch = textbook (explanations, rules, diagrams). Fragenkatalog = the official question bank (multiple-choice). You need both. Many English PDFs combine them.

Instead: