When are you not allowed to park on the right-hand lane?

The combination of choices you selected is correct because they all represent specific situations outlined in German traffic regulations where parking on the right-hand lane is prohibited.

1. If there is an adequately paved hard shoulder to the right of the road lane: Parking is not allowed as it might obstruct emergency vehicles or create hazardous situations for drivers.

2. If there are rails integrated into the road lane: This means the lane is reserved for vehicles such as trams or trains, and parking there could obstruct public transportation.

3. If there is a suitable parking lane to the right of the road lane: This indicates designated areas for parking that must be used instead of blocking regular traffic lanes.

Understanding these rules is essential for ensuring road safety and traffic flow, as parking in these instances could lead to accidents or interruptions in services. Each rule helps maintain an orderly and safe driving environment.