What should you note about the classes C, C1, D and D1 driving licence?

The selected combination is correct because each statement addresses important aspects of the validity and renewal process for classes C, C1, D, and D1 driving licences under German traffic laws.

1. The driving licence is issued for a maximum limited period of 5 years - This ensures that all drivers undergo periodic assessments of their fitness to drive.

2. The earliest that an application can be made to renew the driving licence is 6 months prior to expiry - This allows adequate time for drivers to prepare for renewal and avoid lapses in licensing.

3. The end of the driving licence's validity period is indicated on the driving licence document - This is crucial for drivers to be aware of when they need to renew their licence to maintain legal driving status.

Understanding these elements ensures compliance with regulations, enhances road safety, and helps drivers remain informed about their licensing requirements.