Under what conditions does a driver have the right to park a vehicle at the right edge of the carriageway?

• 1In the absence of specially designated places or a shoulder.
• 2When stopping or parking is impossible on the shoulders or in specially designated places.
• 3Always, if the driver has stopped to pick up or drop off passengers.
• 4Answers 1 and 2.
• 5Answers 1, 2, and 3.