When does a driving permit class D or D1 lapse?

In the context of German traffic rules, a driving permit class D or D1, which is required for driving buses, can lapse under specific circumstances. The combination of options is important because each scenario described affects the validity of the driving permit.

1. The first option is crucial because permits must be renewed periodically. If you fail to renew your permit on time, it becomes invalid, regardless of your driving history.

2. The second option highlights that if you haven't driven a bus for more than a year, it doesn't in itself cause the license to lapse. However, lacking driving experience could eventually lead to restrictions or additional testing if you wish to drive again.

3. The third option pertains to employment status. While ceasing employment as a bus driver does not automatically invalidate your permit, it can impact your ability to keep the skills required for that class.

Therefore, it's essential to recognize that the first option is a definitive cause for the lapse, whereas the other two options provide context but don't directly cause the permit to lapse. Understanding these distinctions helps ensure compliance with regulations and maintain the ability to drive legally and safely.