Core: Standing still or parking: the difference

The book (p.159) splits every stationary car into three categories. Standing still: exclusively the immediate getting in/out of a passenger who is already there, or the immediate loading/unloading of goods. As soon as you wait for someone still to arrive, or for something still to be arranged, that immediacy is gone. Parking: any other form of voluntary stopping. Leaving the vehicle, waiting for a passenger who is still on the way, making a phone call, asking for directions — all parking, even if it only takes one minute. Neither: stopping for a red traffic light, to give way, or in a traffic jam. This is not voluntary, so it falls outside the whole standing-still/parking split — such stops can never violate a parking or standing-still ban. This definition is the foundation on which sign E1 (parking ban) and sign E2 (standing-still ban) get their meaning: where E1 stands, you may still stand still (loading/unloading, getting in/out); where E2 stands, even that is no longer allowed.