That‘s an interesting video! But may I add something: railroads and industries don‘t like to add additional turnouts, if it isn‘t justified by the amount of freight/switching. So, because of that, they had different solutions for switching an industrial track if the engine was on the wrong side. The solution was to do switching by using a rope. The engine pulled the cars for the industry by rope over the diverging turnout, while the engine stayed on the main. As soon as the cars cleared the turnout, the engine moved back across the turnout and now could easily push the cars in that industrial track. Now, that move is something I saw several times on the real railroad, but never on modelrailroads.
On a spur, cars are spoted or picked up by a train running in the right direction, and then droped on the next siding, where a train running in the oposite direction will pick it up and take it ti its destnation.
