What can affect ability to drive in a similar way to alcohol?

You answered correctly. Both medications and drugs can impair your ability to drive in a way similar to alcohol. They can slow reaction time, affect concentration, and reduce coordination, increasing the risk of accidents. Soft drinks, however, do not have these impairing effects. In Germany, it is especially important to consider the warnings on medication and to avoid driving if you are taking substances that can affect your performance behind the wheel. Always follow your doctor's advice and pay attention to the risks indicated on medicine packaging.