Which of the following vehicles can you drive if you hold an A1-category driving licence?

In accordance with the principle of hierarchical entitlements, a driving licence of a higher category authorises the holder to drive vehicles from a lower category. Category A1 is a higher category than category AM, which is required for riding a moped. Consequently, a holder of a category A1 driving licence is also permitted to drive vehicles for which a category AM driving licence is required, such as a moped.