When do you have to notify the loss of a driver’s card?

You answered correctly. In Germany, if you lose your driver’s card (used with digital tachographs in commercial vehicles), you must report the loss immediately. The law requires prompt notification so that a replacement card can be issued and misuse is prevented. Waiting several days is not allowed. Immediate action is necessary to ensure compliance with regulations and avoid penalties. Remember: Always notify authorities as soon as you discover the loss.