What is prohibited when using motorways?

The selected combination is correct because each of the choices reflects specific prohibitions that are vital for maintaining safety on motorways. Stopping on the hard shoulder, reversing, and performing U-turns are all actions that could cause accidents or put vehicles and drivers at risk.

According to German traffic regulations, stopping on the hard shoulder is only permitted in emergencies. Reversing is dangerous due to the high speeds of other vehicles on the motorway, and U-turns are prohibited because they create unpredictable traffic situations. Understanding these rules helps ensure a safe driving environment for everyone on the motorway.