How can you recognise a good driver?

You answered correctly. A good driver remains calm, maintains a relaxed driving style, and does not react to provocations from other road users. This ensures safety and helps prevent accidents or escalation. However, it is not the driver’s role to inform others of their mistakes directly; this can create dangerous situations or lead to conflicts. Instead, focus on driving calmly and defensively, without trying to teach others or reacting emotionally to their behavior. This is what characterizes a good driver according to German traffic rules.