Myrtone wrote: ↑Sun Mar 20, 2022 7:04 pm
Do you mean dual gauge between the Pennsylvania trolley gauge and standard? Dual gauge track between gauges differing by more than that does not seem to be highly problematic.
Yes. The whole point of forcing such a small difference on trolley lines was to preclude interoperation. Among other things PA's steam railroads were dead-set against allowing trolley operators to haul freight cars seamlessly.
Dual gauge with greater separation is of course highly practical. A notable transit example in the US was Los Angeles where standard and 42" gauges coexisted for decades. The major maintenance issue was that the shared side wore out faster, natch.
FWIW I found a few references to triple
-gauge systems, again in Cincinnati as well as northeast PA and a couple of Australian states. https://upload.wikimedia.org/wikipedia/ ... 1120050226
Requiem for it's/its, your/you're, than/then, less/fewer. They were once such nice words with such different meanings...