For some time I've been itching to convert my simple oval inner loop, which currently hosts a single bump-and-reverse trolley, to enable a true stop-and-delay at the station with two trolleys running at the same time. To do this, I had collected the pieces to do both the stop-and-delay (using some electronic components) *and* the "twin trolleys" functionality (using an adaptation I'd developed of the Marx "Twin Trains" set functionality, using a relay). Then, I came across a posting that pointed to an even simpler solution, using insulated track sections:
I realized I could achieve both goals (a realistic stop at the station, and two trolleys running on the same track) without the need for any electronics or even an electro-mechnical device like a relay, by the simple expedient of isolating and insulating a few sections of rail, and using a single wire to connect them! After some fiddling, here's what I've come up with so far, on my test track (the folded figure-8 track configuration was overly complex for this purpose, but it was what I had at hand!):
For some reason I've yet to discover, one of my trolleys (the one on its side in the foreground) chose not to play well with others, so I substituted a locomotive with the reverse cut out (it would otherwise be triggered by the stop), and there's no actual station at the stop point so you have to imagine a station at the stop! Other than that, I think the modifications (really only three pieces of track affected, using six insulated pins and six tar paper insulators under one of the outer rails of two track sections, plus a single wire connection) will easily transfer to the main layout. I'd heard about such a control system from the postwar era, but the video provided all the clarity I needed to cobble together my own version! Thanks and full credit to "ChristmasGarden" for the inspiration! 
