Where is it sufficient to use your parking lights while your car is parked on an unlit roadway?

In Germany, using parking lights is sufficient only when your car is parked on an unlit roadway within built-up areas (urban zones). This is because in built-up areas, street lighting is generally present or expected to some extent, so parking lights provide enough visibility to other road users. Outside built-up areas or on autobahn hard shoulders, where it is typically darker and traffic moves faster, stronger or additional lighting (like hazard lights or low beam headlights) is required to ensure safety. This rule helps prevent accidents by making parked vehicles visible in different lighting and traffic conditions.