You want to make a telephone call while driving. What must you be aware of?

In Germany, you are only allowed to use a phone while driving if you use a hands-free unit. This rule exists to prevent distractions and ensure both hands are free for safe driving. However, if your vehicle is parked in a proper place and the engine is completely switched off, you may use the phone without a hands-free device. Using a phone without hands-free equipment while the vehicle is moving, even at walking pace, is not allowed. This ensures that your attention and control are not compromised at any time when you could be required to react quickly in traffic. So, answers 1 (about the hands-free unit) and 2 (about parked and engine off) are correct.