What must you do if you find yourself in a traffic jam on motorways and on highways with two lanes travelling in the same direction?

Your answer is correct. In a traffic jam on motorways or dual carriageways with at least two lanes going in the same direction, you should create an emergency corridor (Rettungsgasse). This means vehicles in the right-hand lane must move as far to the right as possible, and vehicles in the left-hand lane must move as far to the left as possible. This creates a clear path in the middle for emergency vehicles to pass through. Never drive as far left as possible in the right-hand lane, as this would block the emergency corridor. Remembering this rule will help ensure that rescue services can reach accident scenes quickly and safely.